Seven Sinners is a 1936 British thriller film directed by Albert de Courville and starring Edmund Lowe, Constance Cummings and Felix Aylmer.

[3] The screenplay concerns an American detective and his sidekick, who travel from France to England to take on a gang of international criminals.

During Carnival in Nice, somewhat drunk, New York private detective Ed Harwood accidentally stumbles into the hotel room of Heinrich Wagner, who had helped him earlier that evening.

They all assume Harwood imagined it, including Caryl Fenton, a Worldwide Insurance Company employee sent to take him to Scotland to investigate a robbery.

He tells Paul Turbé, the assistant prefect of police, his theory that the wreck was deliberate, to try to conceal the murder.

Harwood bets him $5000 that he will catch the killer, and devotes no further attention to the case in Scotland (which is eventually solved without his and Fenton's help).

In Paris, Harwood and Fenton go to the address; they inform the occupant, whose name is Hoyt, that Wagner was killed in the train wreck.

However, Harwood finds an old banquet invitation from the "Lord Mayor Elect and the Sheriffs of London" to "Axel Hoyt and party".

At an event for a charity called Pilgrims of Peace, Harwood manages to strike up a conversation with Wentworth.

[5] Frank Nugent, The New York Times critic, called it "a crisp, humorous and deftly turned murder mystery" and noted "an unmistakable resemblance to the Hitchcock melodrama [The 39 Steps] in the picture's rapid direction, urbanity and cleverness.