It has been revealed that Malcolm McDowell will play a guest role when Psych comes back for a sixth season.
He is expected to play the part of Ambassador Fanshaw, a British envoy in an episode that will be titled Shawn Rescues Darth Vader
The Ambassador after discovering a dead woman in his house will engage the services of Shawn (played by James Roday) and Gus (played by Dule Hill) to help find the killer.
McDowell has featured in shows like The Mentalist, CSI: Maimi and Entourage.
He has also appeared in movies like Star Trek: Generations, Tank Girl and Halloween (2007 version)