A Detective Sergeant is searching for clues to a murder. The Victim is slumped, battered and stabbed, on a chair in the corner of the room.

 

He finds a playing card, the queen of spades, in the Victim's shirt pocket. The calling card of our killer?

 

Then he notices that the Victim isn’t wearing socks. Significant?

 

And finally he finds an encrypted note in the Victim’s clenched fist. After reading through the note he deciphers the clues. SERIAL KILLER!

 

His Detective Chief Inspector arrives and the Detective Sergeant lays out al the clues for her.

 

Has he convinced his boss to open up an investigation and stop further murders? Maybe.