 The day Dr. Mark Sloane is to be  honor  as Man of the Year at the Roast, where comedians makes merciless fun of him in the Jokers Club, which despite its fun-loving name is also a cesspit of envy and blame, Andy Baxter, a sideman who made a surprise appearance grossly insulting the speaker, Lou Summers, and dropping trou he s killed during a very short power break by a knife in the back. While Steve is conducting first interrogations, the killer knocks out Jesse and stabs Lou to death. The crowd provide multiple clues and suspicions, but Mark figures it all out by elimination on accounts of motive and opportunity.