Clue Stars Christopher Lloyd, Lesley Ann Warren and Martin Mull to Guest in Psych Tribute to Cult Fave

Exclusive! Long-awaited homage also features 2 Broke Girls' Garrett Morris and the return of Tears for Fears' Curt Smith

Colonel Mustard did it with the candlestick in the billiard room!

Great news, Psych fans: The long-awaited Clue tribute episode is finally airing this season. And—wait for iiit—guesting in the seventh-season installment are three stars from the original cult film: Christopher Lloyd (Back to the Future), Lesley Ann Warren and Martin Mull.

So what other Clue-riffic surprises are in store?