The Private Life of Sherlock Holmes Mycroft Holmes after George Sanders' failing health removed him from the role. Elaborate sets were built on the backlot at Pinewood Studios including 150 yards of the Baker Street set at a cost of £80,000. The reproduction of the Diogenes Club stood until 1973 having been used in other films such as "Hands of the Ripper" and "Carry On at Your Convenience". The sets were designed by art director Alexandre Trauner. The scenes in Scotland were filmed on location at Urquhart Castle on the banks of Loch Ness. The film originally contained another two separate stories, and a further flashback
Minor Sherlock Holmes characters their relationship. She also posed as John Watson's therapist and then later revealed herself to be Eurus Holmes, and at the end of the episode shoots John Watson with a handgun. In the last episode, "The Final Problem", it is revealed that Sherrinford is in fact a high-security complex on an island to house some of the most dangerous criminals in the world, including Eurus. With Eurus having simply shot John with a tranquiliser dart, Sherlock and John stage a scenario where Mycroft will admit Eurus's existence. Mycroft explains that Eurus was the youngest child, 8 years younger than Mycroft