This comprehensive analysis of Boris Karloff's life and career incorporates criticism, in-depth production information and discussions of cinematic themes and characters, with an account of the historical periods and events depicted in the films and the Hollywood era in which they were produced.

Each of Karloff's horror films is examined at length, as well as his contributions to other media. Over 100 posters, portraits, film scenes and candid photos illustrate the text, and numerous contemporaries (Evelyn Karloff, Laurence Olivier, Henry Brandon, Ian Wolfe, Zita Johann, others) are quoted throughout.