Jonny Lee Miller Sherlock Holmes Actor Lucy Liu Joan Watson Actor Aidan Quinn Captain Thomas Gregson Actor Jon Michael Hill Detective Marcus Bell Actor Ato Essandoh Alfredo Llamosa Guest Star Heather Burns Chloe Butler Guest Star Richard Masur Jacob Weiss Guest Star Stephen Tyrone Williams Randy Guest Star Thomas Ryan Donald Hauser Guest Star Peter Gerety Frank Da Silva Guest Star Rebecca Dayan Fabiana Guest Star Lucas Hall Nelson Maddox Guest Star Robert Creighton Detective Luntz Guest Star Kristine Johnson TV News Anchor Guest Star Robert Doherty Executive Producer Carl Beverly Executive Producer Sarah Timberman Executive Producer Craig Sweeny Executive Producer Bob Goodman Writer Jerry Levine Director