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 Rich Sommer Harlan Emple Guest Star Alia Attallah Athena Guest Star Brandon J. Dirden Agent Polk Guest Star Ned Eisenberg Marvin Hathaway Guest Star Siobhan Fallon Hogan Sylvia Kozar Guest Star Steven Robertson Adam Braun Guest Star Alton Fitzgerald White Lloyd Guest Star Stephen Schnetzer Eli Guest Star Susan Varon Bingo Host Guest Star Isabel Arraiza Lily Zavala Guest Star Jeanette Dilone Romy Guest Star Robert Doherty Executive Producer Carl Beverly Executive Producer Sarah Timberman Executive Producer John Polson Executive Producer Jason Tracey Executive Producer Tamara Jaron Writer Kelly Wheeler Writer Christine Moore Director