Airs Wednesday, August 18th at 10/9c on USA Network, guest starring Carl Weathers and William Devane! After a former police chief is murdered, details emerge indicating he might have involved himself in criminal activity after his retirement. Shawn and Gus must then team with two of his former colleagues -- and doppelgangers for themselves in thirty years -- to clear the old chief's name and solve his murder. Become a fan on Facebook http://facebook.com/psych, visit the official site http://www.usanetwork.com/series/psych and follow Psych on Twitter http://twitter.com/psych_usa