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 Liza J. Bennett Hannah Gregson Guest Star Jacob Fishel Graham Jenkins Guest Star De'Adre Aziza Krista Guest Star Chris Ashworth Doron Guest Star Sarah Clements H.R. Rep Guest Star Danny Garcia Foreman Guest Star Irene Sofia Lucio Young Detective Guest Star Gilbert Cruz Older Detective Guest Star Comfort Clinton Maddie Guest Star Lawrence Ballard Guard Guest Star Robert Doherty Executive Producer Carl Beverly Executive Producer Sarah Timberman Executive Producer John Polson Executive Producer Jason Tracey Executive Producer, Writer Seith Mann Director