The Lone Wolf in London is a 1947 American mystery crime film directed by Leslie Goodwins and starring Gerald Mohr, Nancy Saunders and Eric Blore.

[1] The picture features the fictional Scotland Yard detective the Lone Wolf who travels to London, and solves the mystery of some missing jewels.

[2] In 1947, Inspector Garvey of Scotland Yard suspects Michael Lanyard, the reformed jewel thief known as the "Lone Wolf," is behind the theft of the priceless diamonds called the "Eyes of the Nile".

Lanyard denies any involvement claiming that he is in London with his butler, Claudius Jamison to write a book on the jewels and was in New York when they were stolen.

Sir John confides that he is in desperate need of money and asks Lanyard to arrange a confidential loan with part of his jewel collection as collateral.

Lanyard decides to accept Kelmscott's offer and arranges to meet Bruce Tang, a gem dealer the next morning.