Mary Shelley
The film is a fictionalized retelling of the Shelleys' visit to Lord Byron in Villa Diodati by Lake Geneva, shot in Gaddesden Place. It concerns their competition to write a horror story, which ultimately led to Mary Shelley writing "Frankenstein" and John Polidori writing "The Vampyre." The same event has also been portrayed in the films Mary Shelley (with Elle Fanning as Mary Shelley), "Haunted Summer" (1988) (with Alice Krige as Mary Shelley) among others, and alluded to in "Bride of Frankenstein" (1935) (with Elsa Lanchester as Mary Shelley and the Bride of the Monster).