Jonny Lee Miller Sherlock Holmes Actor Lucy Liu Joan Watson Actor Aidan Quinn Captain Thomas Gregson Actor Jon Michael Hill Detective Marcus Bell Actor Roger Rees Alistair Moore Guest Star Ron Raines Ian Guest Star Garret Dillahunt Bart MacIntosh Guest Star Brandon Espinoza Apollo Mercer Guest Star Michael Medieros Joe Bey Guest Star Jamie Harrold Coogan Burl Guest Star Dennis Flanagan Jeremy Guest Star Larry Mitchell Uniform Cop Guest Star Brett G. Smith ESU Captain Guest Star Jay Ward ESU Officer Guest Star Robert Doherty Executive Producer Carl Beverly Executive Producer Sarah Timberman Executive Producer Craig Sweeny Executive Producer Liz Friedman Writer Jeffrey Paul King Writer Sanaa Hamri Director