Jonny Lee Miller Sherlock Holmes Actor Lucy Liu Joan Watson Actor Aidan Quinn Captain Thomas Gregson Actor Jon Michael Hill Detective Marcus Bell Actor Desmond Harrington Michael Actor Kevin Ray Kevin Guest Star Mike Doyle Chris Holland Guest Star James Monroe Iglehart Detective Mason Guest Star Juan Carlos Hernández Adrian Cruz Guest Star Geno Segers Bodyguard Guest Star Gia Crovatin Marcy Nix Guest Star Michael Potts Dr. Peter Hanson Guest Star Arnie Burton Paul Chambers Guest Star Ron Menzel Brian Guest Star Ami Sheth Mrs. Holland Guest Star Robert Vincent Smith George Nix Guest Star Bruce Sabath David Guest Star Robert Doherty Executive Producer Carl Beverly Executive Producer Sarah Timberman Executive Producer John Polson Executive Producer Jason Tracey Executive Producer Jeffrey Paul King Writer Christine Moore Director