This Man Is Dangerous (U.S. title: The Patient Vanishes) is a 1941 British thriller film, directed by Lawrence Huntington and starring James Mason and Gordon McLeod. The film is based on the novel They Called Him Death by David Hume.
The current status of the film is unclear. Although it is said to have been shown on British television as recently as 1987, the film was never commercially released to the VHS format of the time, and in fact a 1987 transmission may be debatable because the only film of this title which appears to have been shown that year in the digital archives of the Times, Guardian, Daily Express and Daily Mirror is a 1985 American TV movie. The British Film Institute does not hold a print in the National Archive and attempts to track it down have so far been proved fruitless. Pending its rediscovery, the film is classed as "missing, believed lost" and is included on the BFI's "75 Most Wanted" list of missing British feature films.Synopsis
Mick Cardby (Mason) earns a living as a self-employed private detective, to the exasperation of his father, Detective Inspector Cardby of Scotland Yard (McLeod), who would much prefer his son to enrol as a regular policeman.
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