Mr. Holmes is a 2015 British-American crime drama mystery film, directed by Bill Condon, based on Mitch Cullin's 2005 novel A Slight Trick of the Mind, and featuring the character Sherlock Holmes. The film stars Sir Ian McKellen as Sherlock Holmes, Laura Linney as housekeeper Mrs. Munro and Milo Parker as her son Roger. Set primarily during his retirement, the film follows a 93-year-old Holmes who struggles to recall the details of his final case while his mind begins to deteriorate. Principal photography began on 5 July 2014, in London. The film was screened out of competition at the 65th Berlin International Film Festival and had its premiere on 7 February 2015. In 1947, the long-retired Sherlock Holmes, aged 93, lives in a remote Sussex farmhouse with his housekeeper, Mrs Munro, and her young son Roger. Having just returned from a trip to Hiroshima, he starts to use jelly made from the prickly ash plant he acquired there in an effort to improve his failing memory. Unhappy about his ...