Client is throwing a surprise 40th bday party for his wife and it's going to be a murder mystery theme.

It's a small cake, one tier, 9". I have a couple ideas but looking for more. Client wants it to be mostly 40th bday but with some murder mystery elements.

Thanks for any ideas!

What about a 1/2 sheet of the game "Clue"? Does it have to be 9 inch? You could make the little weapons out of fondant and have the b-day boy/girl friend's/party attendees names on the cake. For instance, instead of Mrs. White or professor plum, have Mrs. ____ (name of friend) etc..I'm sure you could incoporate the age somehow too...

Just some brainstorming:
Crime scene tape
chalk body outline
murder weapons: rope gun ax knife bottle of poison candlestick lol
magnifying glass
haunted house
Hand cuffs
jail cell window with criminal in striped suit