The film was directed by Michael Gordon and written by Arnold Phillips [fr; de], Max Nosseck, and Donald Davis.
[1] Former jewel thief and reformed detective Michael Lanyard, or the Lone Wolf, is driving to a party with his butler Jamison.
Meanwhile, Cooper, an unprofessed criminal, is carrying out a scheme to loot the jewelry of select wealthy persons — namely, Jane Merrick, Sonia Budenny and Andrews.
He escapes but is found by magazine writer Sidney Shaw, who agrees not to rat Lanyard out in exchange for a scoop.
In the middle of his confidence trick on Blake, Arthur is halted by Lanyard, Jamison, and Shaw, who rush into the hotel room.
The police arrive in time to arrest the jealous lover and the Lone Wolf is exonerated from all charges.
The film marked American actor Warren William's seventh and second-to-last portrayal of the Lone Wolf.