diff --git a/saga/input.cpp b/saga/input.cpp
index 3d2754220ae..b85b2fbe8fd 100644
--- a/saga/input.cpp
+++ b/saga/input.cpp
@@ -100,6 +100,9 @@ int SagaEngine::processInput() {
 				break;
 			case 289: // F8
 				break;
+			case 290: // F9
+				_interface->keyBoss();
+				break;
 
 			// Actual game keys
 			case 32: // space
diff --git a/saga/interface.cpp b/saga/interface.cpp
index ccb172345fd..06dab0a3bf5 100644
--- a/saga/interface.cpp
+++ b/saga/interface.cpp
@@ -177,6 +177,7 @@ Interface::Interface(SagaEngine *vm) : _vm(vm) {
 	_active = true;
 	_panelMode = _lockedMode = kPanelNull;
 	_savedMode = -1;
+	_bossMode = -1;
 	_fadeMode = kNoFade;
 	_inMainMode = false;
 	*_statusText = 0;
@@ -313,6 +314,9 @@ void Interface::setMode(int mode) {
 		break;
 	case kPanelChapterSelection:
 		break;
+	case kPanelBoss:
+		_vm->_render->setFlag(RF_DEMO_SUBST);
+		break;
 	}
 
 	draw();
@@ -487,6 +491,10 @@ bool Interface::processAscii(uint16 ascii, bool synthetic) {
 			_vm->shutDown();
 		}
 		break;
+	case kPanelBoss:
+		_vm->_render->clearFlag(RF_DEMO_SUBST);
+		keyBossExit();
+		break;
 	}
 	return false;
 }
@@ -2298,4 +2306,81 @@ void Interface::mapPanelDrawCrossHair() {
 	}
 }
 
+void Interface::keyBoss() {
+	if (_vm->getGameType() != GType_IHNM)
+		return;
+
+	if (_bossMode != -1 || _fadeMode != kNoFade)
+		return;
+
+	_vm->_sound->pauseVoice();
+	_vm->_sound->pauseSound();
+	_vm->_music->pause();
+
+	int i;
+	byte *resource;
+	size_t resourceLength, imageLength;
+	Surface *backBuffer;
+	Rect rect;
+	byte *image;
+	int imageWidth, imageHeight;
+	const byte *pal;
+	PalEntry cPal[PAL_ENTRIES];
+
+	_vm->_gfx->showCursor(false);
+
+	backBuffer = _vm->_gfx->getBackBuffer();
+
+	rect.left = rect.top = 0;
+
+	_vm->_resource->loadResource(_interfaceContext, RID_IHNM_BOSS_SCREEN, resource, resourceLength);
+	if (resourceLength == 0) {
+		error("Interface::bossKey() unable to load Boss image resource");
+	}
+
+	_bossMode = _panelMode;
+	setMode(kPanelBoss);
+
+	_vm->decodeBGImage(resource, resourceLength, &image, &imageLength, &imageWidth, &imageHeight);
+	rect.setWidth(imageWidth);
+	rect.setHeight(imageHeight);
+
+	_vm->_gfx->getCurrentPal(_mapSavedPal);
+	pal = _vm->getImagePal(resource, resourceLength);
+
+	for (i = 0; i < PAL_ENTRIES; i++) {
+		cPal[i].red = *pal++;
+		cPal[i].green = *pal++;
+		cPal[i].blue = *pal++;
+	}
+
+	backBuffer->blit(rect, image);
+
+	_vm->_gfx->setPalette(cPal);
+
+	free(resource);
+	free(image);
+}
+
+
+void Interface::keyBossExit() {
+	PalEntry pal[PAL_ENTRIES];
+
+	_vm->_sound->resumeVoice();
+	_vm->_sound->resumeSound();
+	_vm->_music->resume();
+
+	_vm->_gfx->getCurrentPal(pal);
+
+	_vm->_gfx->palToBlack(pal, 1);
+	setMode(_bossMode);
+
+	_vm->_render->drawScene();
+
+	_vm->_gfx->blackToPal(_mapSavedPal, 1);
+
+	_bossMode = -1;
+}
+
+
 } // End of namespace Saga
diff --git a/saga/interface.h b/saga/interface.h
index 4fdacf30c08..306819a2b8e 100644
--- a/saga/interface.h
+++ b/saga/interface.h
@@ -70,7 +70,8 @@ enum PanelModes {
 	kPanelSceneSubstitute,
 	kPanelChapterSelection,
 	kPanelCutaway,
-	kPanelVideo
+	kPanelVideo,
+	kPanelBoss
 //	kPanelInventory
 };
 
@@ -243,6 +244,9 @@ public:
 	bool processAscii(uint16 ascii, bool synthetic = false);
 	void processKeyUp(uint16 ascii);
 
+	void keyBoss();
+	void keyBossExit();
+
 	void disableAbortSpeeches(bool d) { _disableAbortSpeeches = d; }
 
 	bool _textInput;
@@ -423,6 +427,7 @@ private:
 	int _panelMode;
 	int _savedMode;
 	int _lockedMode;
+	int _bossMode;
 	bool _inMainMode;
 	char _statusText[STATUS_TEXT_LEN];
 	int _statusOnceColor;
diff --git a/saga/resnames.h b/saga/resnames.h
index bb42aa53f52..aa1e1d573a8 100644
--- a/saga/resnames.h
+++ b/saga/resnames.h
@@ -87,6 +87,8 @@ namespace Saga {
 #define RID_IHNM_MAIN_PANEL_SPRITES 13 // TODO: verify this
 #define RID_IHNM_MAIN_STRINGS 21
 
+#define RID_IHNM_BOSS_SCREEN 19
+
 // Puzzle portraits
 #define RID_ITE_SAKKA_APPRAISING	6
 #define RID_ITE_SAKKA_DENIAL		7