The Crooked Sky is a low budget 1957 black and white British melodrama/crime film, directed by Henry Cass from a story by Maclean Rogers and Charles F.

[2] American detective Mike Conlin teams up with Scotland Yard to catch the villains behind a big counterfeiting ring.

In London, £500,000 in counterfeit one-pound notes has been smuggled in by Tom Alanson, an American radio engineer for a freight line flying between England and the United States.

Mike suspects Alanson's freight line were involved in smuggling the counterfeit currency, subsequently, he flies to London.

After revealing his true identity to the local police inspector, who has come to investigate the murder, Mike goes to London to consult with Mac and suggests that the fake currency might have been concealed in radio equipment removed after each flight.

In private, Bill, whose involvement in the ring was to earn money to start his own charter company, tells Fraser he is concerned about the recent murders.

After a gambler named Smith, heavy in debt to Fraser, commits suicide, some counterfeit notes are found, along with a list of gambling clubs.

"[9] TV Guide called the film an "interesting British attempt to put an American-style, hard-boiled detective in their own yard, [it] even goes as far as naming the hero 'Mike' instead of the usual 'Geoffrey' or 'Ronnie'.