Jonny Lee Miller Sherlock Holmes Actor Lucy Liu Joan Watson Actor Aidan Quinn Captain Thomas Gregson Actor Jon Michael Hill Detective Marcus Bell Actor James Frain Odin Reichenbach Actor John Sharian George Eagen Guest Star Gabriel Ebert Sebastian Florenti Guest Star Daniel Davis Antoine LaGrange Guest Star Rob Bartlett Captain Dwyer Guest Star David Beach Edward Cutler Guest Star Kate Middleton Aura Swenson Guest Star Kate Levy Aura's Lawyer Guest Star Alex Cranmer Mr. Balfour Guest Star Lisa Arrindell Ethiopian Consul Guest Star Tiffany Villarin Customer Service Rep 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 Thomas Carter Director