Actor Diego Klattenhoff made his acting debut in 2001 with a small part on the Christian drama series Doc. This was followed by more guest spots, including an episode on the thriller 1-800-Missing, Psych, Fallen, Supernatural, ER, 24, The Listener, sci-fi series Smallville, Stargate SG-1, and six episodes on At the Hotel. He also played Ivan on Men in Trees, and in 2009, he was cast as Mike Callahan on the NBC drama Mercy.