Jonny Lee Miller Sherlock Holmes Actor Lucy Liu Joan Watson Actor Aidan Quinn Captain Thomas Gregson Actor Jon Michael Hill Detective Marcus Bell Actor John Noble Mr. Morland Holmes Actor Jordan Gelber Guest Star Virginia Madsen Guest Star Skip Sudduth Guest Star Malcolm Gets Guest Star Brian Avers Guest Star Andy Taylor Guest Star Edelen McWilliams Guest Star Jackie Hoffman Guest Star Jon Shaver Guest Star Haddi Tabal Guest Star Rebecca S'manga Frank Guest Star Cullen Wheeler Guest Star Robert Doherty Executive Producer Carl Beverly Executive Producer Sarah Timberman Executive Producer John Polson Executive Producer, Director Jason Tracey Executive Producer Tamara Jaron Writer