Guest Stars Sarah Greene as Hecate Poole Douglas Hodge as Inspector Bartholomew Rusk Shazad Latif as Dr. Henry Jekyll Christian Camargo as Dr. Alexander Sweet Samuel Barnett as Renfield Jessica Barden as Justine Sean Gilder as Marshal Franklin Ostow Cokey Falkow as Scarman Co Starring Jack Hickey as Junior Inspector Sebastian Croft as Boy Familiar Jack Greenlees as Lead Familiar Steve Wilson as Attendant - Bedlam Jamie Ballard as Balfour Patrick Rocks as Saloon Proprietor Calum MacPherson as Proprietor Jonathan Delaney Tynan as Colleague of Dr. Sweet Tantoo Cardinal as Old Native American Woman Richard Doubleday as Magic Lantern Proprietor Fred McCloskey as Sheriff