London After Midnight (original working title: The Hypnotist) is a lost 1927 American silent mystery horror film directed and co-produced by Tod Browning and starring Lon Chaney, with Marceline Day, Conrad Nagel, Henry B. Walthall and Polly Moran. The film was distributed by Metro-Goldwyn-Mayer, and was written by Waldemar Young, based on the story "The Hypnotist" which was written by Browning. Merritt B. Gerstad was the cinematographer, and the sets were designed by Cedric Gibbons and Arnold Gillespie. Harry Sharrock was the assistant director. The film cost $151,666.14 to produce, and grossed $1,004,000. Chaney's real-life make-up case can be seen in the last scene of the film sitting on a table, the only time it ever appeared in a movie. Browning remade the film as a talkie in 1935, as Mark of the Vampire, starring Bela Lugosi.

Plot

Roger Balfour is found dead in his London home one night. Burke, a representative of Scotland Yard, after questioning everyone present, declares the death a suicide despite objection from Balfour's neighbour and close friend, Sir James Hamlin.