Guest Stars Emily Carey as Mary Conan Doyle Noah Jupe as Kingsley Conan Doyle Louise Delamere as Louisa "Touie" Conan Doyle Angela Curran as Vera Tufts Ewen Bremner as Sherlock Holmes Charlotte Hope as Molly Morgan Joe Sims as Nathaniel James Fleet as Dr. Pilsen Stacy J. Gough as Guard Lewis McGowan as Young Doyle Risteard Cooper as Charles Doyle Andrew Bicknell as Exorcist Chook Sibtain as Dr. Chandra Chu Omambala as Dr. Randall Michael Shelford as Simon Fleming Kevin Trainor as Priest
