Stephen Mangan Sir Arthur Conan Doyle Actor Michael Weston Harry Houdini Actor Rebecca Liddiard Constable Adelaide Stratton Actor Paul Bergquist Faith Healing Audience Member Guest Star Andrew Bridgmont Dr. Perlow Guest Star Neil Broome The Coughing Man Guest Star Nicholas Burns Frederick Batch Guest Star Emily Carey Mary Conan Doyle Guest Star Paddy C. Courtney Mr. Gaines Guest Star Jennifer Day Mourner Guest Star Louise Delamere Touie Doyle Guest Star Michael Dickins Street Robber Guest Star Marshall Griffin Security Guard Guest Star Amy Huberman Mrs. Anne Batch Guest Star Noah Jupe Kingsley Conan Doyle Guest Star Tim McInnerny Horace Merring Guest Star Adam Nagaitis George Gudgett Guest Star Enuka Okuma Jane Downey Guest Star Jerry-Jane Pears Florrie Guest Star Nathan Stewart-Jarrett Elias Downey Guest Star David Shore Executive Producer Kenton Allen Executive Producer Matthew Justice Executive Producer Luke Alkin Executive Producer Christina Jennings Executive Producer Maggie Murphy Executive Producer Scott Garvie Executive Producer