diff --git a/tools/engine.py b/tools/engine.py
index 384683f..7fd4013 100644
--- a/tools/engine.py
+++ b/tools/engine.py
@@ -117,7 +117,9 @@ class GameEngine:
             args = tc.get("args", {})
 
             if name == "narrative":
-                book_log = args.get("text", book_log)
+                text = args.get("text", "")
+                if text:
+                    book_log = (book_log + "\n\n" + text) if book_log else text
             elif name == "finalize_turn":
                 if args.get("user_prompt"):
                     user_prompt = args["user_prompt"]