diff --git a/src/g_level.cpp b/src/g_level.cpp
index 49047a487..5e8780f58 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -79,6 +79,7 @@
 #include "events.h"
 #include "i_music.h"
 #include "a_dynlight.h"
+#include "p_conversation.h"
 
 #include "gi.h"
 
@@ -759,6 +760,9 @@ void G_DoCompleted (void)
 
 	if (automapactive)
 		AM_Stop ();
+	
+	// Close the conversation menu if open.
+	P_FreeStrifeConversations ();
 
 	wminfo.finished_ep = level.cluster - 1;
 	wminfo.LName0 = TexMan.CheckForTexture(level.info->PName, ETextureType::MiscPatch);
diff --git a/src/g_levellocals.h b/src/g_levellocals.h
index 22e952f5e..a88a789be 100644
--- a/src/g_levellocals.h
+++ b/src/g_levellocals.h
@@ -53,6 +53,10 @@
 class DACSThinker;
 class DFraggleThinker;
 class DSpotState;
+struct FStrifeDialogueNode;
+
+typedef TMap<int, int> FDialogueIDMap;				// maps dialogue IDs to dialogue array index (for ACS)
+typedef TMap<FName, int> FDialogueMap;				// maps actor class names to dialogue array index
 
 struct FLevelData
 {
@@ -105,9 +109,15 @@ struct FLevelData
 	FBehaviorContainer Behaviors;
 	FTagManager tagManager;
 	AActor *TIDHash[128];
+	
+	TArray<FStrifeDialogueNode *> StrifeDialogues;
+	FDialogueIDMap DialogueRoots;
+	FDialogueMap ClassRoots;
+
 
 };
 
+
 struct FLevelLocals : public FLevelData
 {
 	void Tick();
@@ -123,6 +133,10 @@ struct FLevelLocals : public FLevelData
 	void TranslateLineDef (line_t *ld, maplinedef_t *mld, int lineindexforid = -1);
 	bool IsTIDUsed(int tid);
 	int FindUniqueTID(int start_tid, int limit);
+	int GetConversation(int conv_id);
+	int GetConversation(FName classname);
+	void SetConversation(int convid, PClassActor *Class, int dlgindex);
+	int FindNode (const FStrifeDialogueNode *node);
 
 	FSectorTagIterator GetSectorTagIterator(int tag)
 	{
diff --git a/src/maploader/maploader.cpp b/src/maploader/maploader.cpp
index e5aedbacd..0dd419091 100644
--- a/src/maploader/maploader.cpp
+++ b/src/maploader/maploader.cpp
@@ -3046,7 +3046,7 @@ void MapLoader::LoadLevel(MapData *map, const char *lumpname, int position)
 	LoadMapinfoACSLump();
 
 
-	P_LoadStrifeConversations(map, lumpname);
+	P_LoadStrifeConversations(Level, map, lumpname);
 
 	FMissingTextureTracker missingtex;
 
diff --git a/src/p_conversation.cpp b/src/p_conversation.cpp
index 5bb9dec50..e65321d8c 100644
--- a/src/p_conversation.cpp
+++ b/src/p_conversation.cpp
@@ -96,28 +96,21 @@ struct TeaserSpeech
 
 static FRandom pr_randomspeech("RandomSpeech");
 
-TArray<FStrifeDialogueNode *> StrifeDialogues;
-
-typedef TMap<int, int> FDialogueIDMap;				// maps dialogue IDs to dialogue array index (for ACS)
-typedef TMap<FName, int> FDialogueMap;				// maps actor class names to dialogue array index
-
 FClassMap StrifeTypes;
-static FDialogueIDMap DialogueRoots;
-static FDialogueMap ClassRoots;
 static int ConversationMenuY;
 
-static int ConversationPauseTic;
+// These two should be moved to player_t...
+static FStrifeDialogueNode *PrevNode;
 static int StaticLastReply;
 
-static bool LoadScriptFile(int lumpnum, FileReader &lump, int numnodes, bool include, int type);
-static FStrifeDialogueNode *ReadRetailNode (FileReader &lump, uint32_t &prevSpeakerType);
-static FStrifeDialogueNode *ReadTeaserNode (FileReader &lump, uint32_t &prevSpeakerType);
+static bool LoadScriptFile(FLevelLocals *Level, int lumpnum, FileReader &lump, int numnodes, bool include, int type);
+static FStrifeDialogueNode *ReadRetailNode (FLevelLocals *Level, FileReader &lump, uint32_t &prevSpeakerType);
+static FStrifeDialogueNode *ReadTeaserNode (FLevelLocals *Level, FileReader &lump, uint32_t &prevSpeakerType);
 static void ParseReplies (FStrifeDialogueReply **replyptr, Response *responses);
 static bool DrawConversationMenu ();
 static void PickConversationReply (int replyindex);
 static void TerminalResponse (const char *str);
 
-static FStrifeDialogueNode *PrevNode;
 
 //============================================================================
 //
@@ -137,7 +130,7 @@ void ClearStrifeTypes()
 	StrifeTypes.Clear();
 }
 
-void SetConversation(int convid, PClassActor *Class, int dlgindex)
+void FLevelLocals::SetConversation(int convid, PClassActor *Class, int dlgindex)
 {
 	if (convid != -1)
 	{
@@ -156,14 +149,14 @@ PClassActor *GetStrifeType (int typenum)
 	else return *ptype;
 }
 
-int GetConversation(int conv_id)
+int FLevelLocals::GetConversation(int conv_id)
 {
 	int *pindex = DialogueRoots.CheckKey(conv_id);
 	if (pindex == NULL) return -1;
 	else return *pindex;
 }
 
-int GetConversation(FName classname)
+int FLevelLocals::GetConversation(FName classname)
 {
 	int *pindex = ClassRoots.CheckKey(classname);
 	if (pindex == NULL) return -1;
@@ -178,12 +171,11 @@ int GetConversation(FName classname)
 //
 //============================================================================
 
-void P_LoadStrifeConversations (MapData *map, const char *mapname)
+void P_LoadStrifeConversations (FLevelLocals *Level, MapData *map, const char *mapname)
 {
-	P_FreeStrifeConversations ();
 	if (map->Size(ML_CONVERSATION) > 0)
 	{
-		LoadScriptFile (map->lumpnum, map->Reader(ML_CONVERSATION), map->Size(ML_CONVERSATION), false, 0);
+		LoadScriptFile (Level, map->lumpnum, map->Reader(ML_CONVERSATION), map->Size(ML_CONVERSATION), false, 0);
 	}
 	else
 	{
@@ -192,8 +184,8 @@ void P_LoadStrifeConversations (MapData *map, const char *mapname)
 			char scriptname_b[9] = { 'S','C','R','I','P','T',mapname[3],mapname[4],0 };
 			char scriptname_t[9] = { 'D','I','A','L','O','G',mapname[3],mapname[4],0 };
 
-			if (   LoadScriptFile(scriptname_t, false, 2)
-				|| LoadScriptFile(scriptname_b, false, 1))
+			if (   LoadScriptFile(Level, scriptname_t, false, 2)
+				|| LoadScriptFile(Level, scriptname_b, false, 1))
 			{
 				return;
 			}
@@ -201,13 +193,13 @@ void P_LoadStrifeConversations (MapData *map, const char *mapname)
 
 		if (gameinfo.Dialogue.IsNotEmpty())
 		{
-			if (LoadScriptFile(gameinfo.Dialogue, false, 0))
+			if (LoadScriptFile(Level, gameinfo.Dialogue, false, 0))
 			{
 				return;
 			}
 		}
 
-		LoadScriptFile("SCRIPT00", false, 1);
+		LoadScriptFile(Level, "SCRIPT00", false, 1);
 	}
 }
 
@@ -219,7 +211,7 @@ void P_LoadStrifeConversations (MapData *map, const char *mapname)
 //
 //============================================================================
 
-bool LoadScriptFile (const char *name, bool include, int type)
+bool LoadScriptFile (FLevelLocals *Level, const char *name, bool include, int type)
 {
 	int lumpnum = Wads.CheckNumForName (name);
 	const bool found = lumpnum >= 0
@@ -236,11 +228,11 @@ bool LoadScriptFile (const char *name, bool include, int type)
 	}
 	FileReader lump = Wads.ReopenLumpReader (lumpnum);
 
-	bool res = LoadScriptFile(lumpnum, lump, Wads.LumpLength(lumpnum), include, type);
+	bool res = LoadScriptFile(Level, lumpnum, lump, Wads.LumpLength(lumpnum), include, type);
 	return res;
 }
 
-static bool LoadScriptFile(int lumpnum, FileReader &lump, int numnodes, bool include, int type)
+static bool LoadScriptFile(FLevelLocals *Level, int lumpnum, FileReader &lump, int numnodes, bool include, int type)
 {
 	int i;
 	uint32_t prevSpeakerType;
@@ -261,13 +253,13 @@ static bool LoadScriptFile(int lumpnum, FileReader &lump, int numnodes, bool inc
 
 	if (!isbinary)
 	{
-		P_ParseUSDF(lumpnum, lump, numnodes);
+		P_ParseUSDF(Level, lumpnum, lump, numnodes);
 	}
 	else 
 	{
 		if (!include)
 		{
-			LoadScriptFile("SCRIPT00", true, 1);
+			LoadScriptFile(Level, "SCRIPT00", true, 1);
 		}
 		if (!(gameinfo.flags & GI_SHAREWARE))
 		{
@@ -297,13 +289,13 @@ static bool LoadScriptFile(int lumpnum, FileReader &lump, int numnodes, bool inc
 		{
 			if (!(gameinfo.flags & GI_SHAREWARE))
 			{
-				node = ReadRetailNode (lump, prevSpeakerType);
+				node = ReadRetailNode (Level, lump, prevSpeakerType);
 			}
 			else
 			{
-				node = ReadTeaserNode (lump, prevSpeakerType);
+				node = ReadTeaserNode (Level, lump, prevSpeakerType);
 			}
-			node->ThisNodeNum = StrifeDialogues.Push(node);
+			node->ThisNodeNum = Level->StrifeDialogues.Push(node);
 		}
 	}
 	return true;
@@ -317,7 +309,7 @@ static bool LoadScriptFile(int lumpnum, FileReader &lump, int numnodes, bool inc
 //
 //============================================================================
 
-static FStrifeDialogueNode *ReadRetailNode (FileReader &lump, uint32_t &prevSpeakerType)
+static FStrifeDialogueNode *ReadRetailNode (FLevelLocals *Level, FileReader &lump, uint32_t &prevSpeakerType)
 {
 	FStrifeDialogueNode *node;
 	Speech speech;
@@ -343,9 +335,9 @@ static FStrifeDialogueNode *ReadRetailNode (FileReader &lump, uint32_t &prevSpea
 	{
 		if (type != NULL)
 		{
-			ClassRoots[type->TypeName] = StrifeDialogues.Size();
+			Level->ClassRoots[type->TypeName] = Level->StrifeDialogues.Size();
 		}
-		DialogueRoots[speech.SpeakerType] = StrifeDialogues.Size();
+		Level->DialogueRoots[speech.SpeakerType] = Level->StrifeDialogues.Size();
 		prevSpeakerType = speech.SpeakerType;
 	}
 
@@ -393,7 +385,7 @@ static FStrifeDialogueNode *ReadRetailNode (FileReader &lump, uint32_t &prevSpea
 //
 //============================================================================
 
-static FStrifeDialogueNode *ReadTeaserNode (FileReader &lump, uint32_t &prevSpeakerType)
+static FStrifeDialogueNode *ReadTeaserNode (FLevelLocals *Level, FileReader &lump, uint32_t &prevSpeakerType)
 {
 	FStrifeDialogueNode *node;
 	TeaserSpeech speech;
@@ -418,9 +410,9 @@ static FStrifeDialogueNode *ReadTeaserNode (FileReader &lump, uint32_t &prevSpea
 	{
 		if (type != NULL)
 		{
-			ClassRoots[type->TypeName] = StrifeDialogues.Size();
+			Level->ClassRoots[type->TypeName] = Level->StrifeDialogues.Size();
 		}
-		DialogueRoots[speech.SpeakerType] = StrifeDialogues.Size();
+		Level->DialogueRoots[speech.SpeakerType] = Level->StrifeDialogues.Size();
 		prevSpeakerType = speech.SpeakerType;
 	}
 
@@ -581,7 +573,7 @@ FStrifeDialogueNode::~FStrifeDialogueNode ()
 //
 //============================================================================
 
-static int FindNode (const FStrifeDialogueNode *node)
+int FLevelLocals::FindNode (const FStrifeDialogueNode *node)
 {
 	int rootnode = 0;
 
@@ -725,16 +717,6 @@ DEFINE_ACTION_FUNCTION(DConversationMenu, SendConversationReply)
 
 void P_FreeStrifeConversations ()
 {
-	FStrifeDialogueNode *node;
-
-	while (StrifeDialogues.Pop (node))
-	{
-		delete node;
-	}
-
-	DialogueRoots.Clear();
-	ClassRoots.Clear();
-
 	PrevNode = NULL;
 	if (CurrentMenu != NULL && CurrentMenu->IsKindOf("ConversationMenu"))
 	{
@@ -756,7 +738,8 @@ void P_StartConversation (AActor *npc, AActor *pc, bool facetalker, bool saveang
 	int i;
 
 	// Make sure this is actually a player.
-	if (pc->player == NULL) return;
+	if (pc == nullptr || pc->player == nullptr || npc == nullptr) return;
+	auto Level = &level;
 
 	// [CW] If an NPC is talking to a PC already, then don't let
 	// anyone else talk to the NPC.
@@ -818,7 +801,7 @@ void P_StartConversation (AActor *npc, AActor *pc, bool facetalker, bool saveang
 		if (jump && CurNode->ItemCheckNode > 0)
 		{
 			int root = pc->player->ConversationNPC->ConversationRoot;
-			CurNode = StrifeDialogues[root + CurNode->ItemCheckNode - 1];
+			CurNode = Level->StrifeDialogues[root + CurNode->ItemCheckNode - 1];
 		}
 		else
 		{
@@ -904,14 +887,14 @@ static void HandleReply(player_t *player, bool isconsole, int nodenum, int reply
 	AActor *npc;
 	bool takestuff;
 	int i;
-
-	if (player->ConversationNPC == NULL || (unsigned)nodenum >= StrifeDialogues.Size())
+	auto Level = &level;
+	if (player->ConversationNPC == nullptr || (unsigned)nodenum >= Level->StrifeDialogues.Size())
 	{
 		return;
 	}
 
 	// Find the reply.
-	node = StrifeDialogues[nodenum];
+	node = Level->StrifeDialogues[nodenum];
 	for (i = 0, reply = node->Children; reply != NULL && i != replynum; ++i, reply = reply->Next)
 	{ }
 	npc = player->ConversationNPC;
@@ -1041,9 +1024,9 @@ static void HandleReply(player_t *player, bool isconsole, int nodenum, int reply
 		const bool isNegative = reply->NextNode < 0;
 		const unsigned next = (unsigned)(rootnode + (isNegative ? -1 : 1) * reply->NextNode - 1);
 
-		if (next < StrifeDialogues.Size())
+		if (next < Level->StrifeDialogues.Size())
 		{
-			npc->Conversation = StrifeDialogues[next];
+			npc->Conversation = Level->StrifeDialogues[next];
 
 			if (isNegative)
 			{
diff --git a/src/p_conversation.h b/src/p_conversation.h
index 2a516e06e..ace3e4788 100644
--- a/src/p_conversation.h
+++ b/src/p_conversation.h
@@ -57,19 +57,14 @@ struct FStrifeDialogueReply
 	bool NeedsGold = false;
 };
 
-extern TArray<FStrifeDialogueNode *> StrifeDialogues;
-
 struct MapData;
 
 void SetStrifeType(int convid, PClassActor *Class);
-void SetConversation(int convid, PClassActor *Class, int dlgindex);
 PClassActor *GetStrifeType (int typenum);
-int GetConversation(int conv_id);
-int GetConversation(FName classname);
 
-bool LoadScriptFile (const char *name, bool include, int type = 0);
+bool LoadScriptFile (FLevelLocals *Level, const char *name, bool include, int type = 0);
 
-void P_LoadStrifeConversations (MapData *map, const char *mapname);
+void P_LoadStrifeConversations (FLevelLocals *Level, MapData *map, const char *mapname);
 void P_FreeStrifeConversations ();
 
 void P_StartConversation (AActor *npc, AActor *pc, bool facetalker, bool saveangle);
@@ -78,7 +73,7 @@ void P_ResumeConversation ();
 void P_ConversationCommand (int netcode, int player, uint8_t **stream);
 
 class FileReader;
-bool P_ParseUSDF(int lumpnum, FileReader &lump, int lumplen);
+bool P_ParseUSDF(FLevelLocals *Level, int lumpnum, FileReader &lump, int lumplen);
 
 
 #endif
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index eb58f6125..b369ffceb 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -3377,9 +3377,9 @@ FUNC(LS_Thing_SetConversation)
 
 	if (arg1 != 0)
 	{
-		dlg_index = GetConversation(arg1);	
+		dlg_index = Level->GetConversation(arg1);
 		if (dlg_index == -1) return false;
-		node = StrifeDialogues[dlg_index];
+		node = Level->StrifeDialogues[dlg_index];
 	}
 
 	if (arg0 != 0)
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index 10d17b30c..e0f58fe73 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -4374,10 +4374,10 @@ AActor *AActor::StaticSpawn (PClassActor *type, const DVector3 &pos, replace_t a
 	actor->SpawnOrder = level.spawnindex++;
 
 	// Set default dialogue
-	actor->ConversationRoot = GetConversation(actor->GetClass()->TypeName);
+	actor->ConversationRoot = level.GetConversation(actor->GetClass()->TypeName);
 	if (actor->ConversationRoot != -1)
 	{
-		actor->Conversation = StrifeDialogues[actor->ConversationRoot];
+		actor->Conversation = level.StrifeDialogues[actor->ConversationRoot];
 	}
 	else
 	{
@@ -5462,11 +5462,11 @@ AActor *P_SpawnMapThing (FMapThing *mthing, int position)
 	if (mthing->Conversation > 0)
 	{
 		// Make sure that this does not partially overwrite the default dialogue settings.
-		int root = GetConversation(mthing->Conversation);
+		int root = level.GetConversation(mthing->Conversation);
 		if (root != -1)
 		{
 			mobj->ConversationRoot = root;
-			mobj->Conversation = StrifeDialogues[mobj->ConversationRoot];
+			mobj->Conversation = level.StrifeDialogues[mobj->ConversationRoot];
 		}
 	}
 
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index 0412eae9d..eebefbfdc 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -263,6 +263,16 @@ void FLevelLocals::ClearLevelData()
 	total_monsters = total_items = total_secrets =
 		killed_monsters = found_items = found_secrets =
 		wminfo.maxfrags = 0;
+	
+	FStrifeDialogueNode *node;
+	
+	while (StrifeDialogues.Pop (node))
+	{
+		delete node;
+	}
+	
+	DialogueRoots.Clear();
+	ClassRoots.Clear();
 
 	// delete allocated data in the level arrays.
 	if (sectors.Size() > 0)
@@ -342,7 +352,6 @@ void P_FreeLevelData ()
 	SN_StopAllSequences ();
 	DThinker::DestroyAllThinkers ();
 
-	P_FreeStrifeConversations ();
 	level.ClearLevelData();
 }
 
diff --git a/src/p_usdf.cpp b/src/p_usdf.cpp
index 9520c869c..cf579e790 100644
--- a/src/p_usdf.cpp
+++ b/src/p_usdf.cpp
@@ -40,12 +40,15 @@
 #include "actor.h"
 #include "a_pickups.h"
 #include "w_wad.h"
+#include "g_levellocals.h"
 
 #define Zd 1
 #define St 2
 
 class USDFParser : public UDMFParserBase
 {
+	FLevelLocals *Level;
+	
 	//===========================================================================
 	//
 	// Checks an actor type (different representation depending on namespace)
@@ -300,7 +303,7 @@ class USDFParser : public UDMFParserBase
 		FStrifeDialogueNode *node = new FStrifeDialogueNode;
 		FStrifeDialogueReply **replyptr = &node->Children;
 
-		node->ThisNodeNum = StrifeDialogues.Push(node);
+		node->ThisNodeNum = Level->StrifeDialogues.Push(node);
 		node->ItemCheckNode = -1;
 
 		FString SpeakerName;
@@ -403,7 +406,7 @@ class USDFParser : public UDMFParserBase
 		PClassActor *type = nullptr;
 		int dlgid = -1;
 		FName clsid = NAME_None;
-		unsigned int startpos = StrifeDialogues.Size();
+		unsigned int startpos = Level->StrifeDialogues.Size();
 
 		while (!sc.CheckToken('}'))
 		{
@@ -455,11 +458,11 @@ class USDFParser : public UDMFParserBase
 			sc.ScriptMessage("No valid actor type defined in conversation.");
 			return false;
 		}
-		SetConversation(dlgid, type, startpos);
-		for(;startpos < StrifeDialogues.Size(); startpos++)
+		Level->SetConversation(dlgid, type, startpos);
+		for(;startpos < Level->StrifeDialogues.Size(); startpos++)
 		{
-			StrifeDialogues[startpos]->SpeakerType = type;
-			StrifeDialogues[startpos]->MenuClassName = clsid;
+			Level->StrifeDialogues[startpos]->SpeakerType = type;
+			Level->StrifeDialogues[startpos]->MenuClassName = clsid;
 		}
 		return true;
 	}
@@ -471,8 +474,9 @@ class USDFParser : public UDMFParserBase
 	//===========================================================================
 
 public:
-	bool Parse(int lumpnum, FileReader &lump, int lumplen)
+	bool Parse(FLevelLocals *l, int lumpnum, FileReader &lump, int lumplen)
 	{
+		Level = l;
 		sc.OpenMem(Wads.GetLumpFullName(lumpnum), lump.Read(lumplen));
 		sc.SetCMode(true);
 		// Namespace must be the first field because everything else depends on it.
@@ -512,7 +516,7 @@ public:
 			{
 				sc.MustGetToken('=');
 				sc.MustGetToken(TK_StringConst);
-				LoadScriptFile(sc.String, true);
+				LoadScriptFile(Level, sc.String, true);
 				sc.MustGetToken(';');
 			}
 			else
@@ -526,13 +530,13 @@ public:
 
 
 
-bool P_ParseUSDF(int lumpnum, FileReader &lump, int lumplen)
+bool P_ParseUSDF(FLevelLocals *l, int lumpnum, FileReader &lump, int lumplen)
 {
 	USDFParser parse;
 
 	try
 	{
-		if (!parse.Parse(lumpnum, lump, lumplen))
+		if (!parse.Parse(l, lumpnum, lump, lumplen))
 		{
 			// clean up the incomplete dialogue structures here
 			return false;
diff --git a/src/serializer.cpp b/src/serializer.cpp
index 73e8e8eb4..3f390bf1c 100644
--- a/src/serializer.cpp
+++ b/src/serializer.cpp
@@ -1968,13 +1968,13 @@ template<> FSerializer &Serialize(FSerializer &arc, const char *key, FStrifeDial
 			}
 			else if (val->IsUint())
 			{
-				if (val->GetUint() >= StrifeDialogues.Size())
+				if (val->GetUint() >= level.StrifeDialogues.Size())
 				{
 					node = nullptr;
 				}
 				else
 				{
-					node = StrifeDialogues[val->GetUint()];
+					node = level.StrifeDialogues[val->GetUint()];
 				}
 			}
 			else