Henry
Julia Hargreaves
Paul Hargreaves
Mary Conan Doyle
Helena Wood
Madame Korzha
Worker (as Alan Wyn Hughes)
Adelaide Stratton
Arthur Conan Doyle
Mitchell Pearce
Dr. Henry Whitaker
Harry Houdini
Madame
Hot Chestnut Seller (uncredited)
Upper class gent (uncredited)
Dinner Guest (uncredited)