Evan Mitchell is a character portrayed by Nick Chinlund in the ABC crime series Castle. Mitchell is a criminal who is known for specializing in making bump keys for break-ins, and was once busted by Esposito. He was a suspect in the Home Invasion Robberies, but opened up to Castle in the latter's capacity as a writer. Mitchell was as spooked as the cops by the violence of the robberies, which made his own trade far more dangerous and difficult to ply.