In “Psych: The Musical,” there’s a play-within-a-TV show, a musical about Jack the Ripper.
Throughout the ep Gus keeps trying to cast himself as a new detective character he’s invented called Jamaican Inspector Man. When he finally gets his chance on stage, this is the Sherlock Holmes-style cloak and hat that he wears.
This is the actual, screen-used costume that Gus, as played by Dulé Hill, wore in the musical episode of Psych.
It’s a two-hour episode and, even by Psych standards, extremely clever.
Want to see it more? There it is in the opening credits of Season 8.
This costume is one of the best items of this excellent episode.