Leonard Callahan is a fictional character portrayed by Demord Dann in the TV series Psych.
They appear in 1 episodes out of a total of 120 aired
Episodes1
High Top Fade Out
episode S4.E7 september 2009A member of Gus's college singing group is murdered, and while the other surviving members are no longer on speaking terms with Gus, they hire Shawn anyway to investigate the crime, after the police classify the death as accidental.