Which novel influenced the movie in which Hattie Morahan played Ann?
Hattie Morahan Harriet Jane "Hattie" Morahan (born 1978) is an English television, film, and stage actress. Her roles include Alice in "The Bletchley Circle", Gale Benson in "The Bank Job" (2008), Ann in "Mr. Holmes" (2015), Rose Coyne in "My Mother and Other Strangers" (2016), and Agathe/The Enchantress in "Beauty and the Beast" (2017).
The Frighteners (novel) The Frighteners (not to be confused with the film of the same title) is a 1989 spy novel by Donald Hamilton, continuing the adventures of his creation, assassin Matt Helm.