Bela Lugosi and Boris Karloff: The Expanded Story of a Haunting Collaboration is a book by Gregory William Mank that follows the careers of the two horror icons. The book examines the Golden Age of Hollywood, the era in which both stars worked, recreates the shooting of Lugosi and Karloff's mutual films, examines their odd and moving personal relationship and analyzes their ongoing legacies. The book also includes a complete filmography of their films together.

Lugosi and Karloff starred in dozens of black-and-white horror films and over the years managed to collaborate on and co-star in eight. Lugosi is best remembered for his portrayal of the vampire Dracula both in the 1926 play as well as the 1931 film by Universal Pictures.