In the Tommy and Tuppence short story The Crackler, Jimmy Faulkener is a young man whom Tommy and Tuppence meet at the Python Club. Tommy and Tuppence are investigating a currency counterfeiting operation which might be operating from the club and Tuppence spends time dnacing and chatting with Jimmy as he seems to enjoy his company. At one point, Marguerite Laidlaw, another one of their suspects, asks Jimmy to put some money on a horse for her and gives him ten one pound notes. Tuppence pretends to want change and swops a ten pound note for Jimmy's notes. Examining the notes from Jimmy later, the Beresfords discover that all of them are fakes.
In LWT's 1984 adaptation of the story (Episode 10 of Agatha Christie's Partners in Crime), the character's name is changed slightly to "Captain James Faulkener" and has the nickname "Fruity". Here he has a slightly larger role. He is Tommy's cousin and he helps Tommy and Tuppence to become members of the club. Like in the original, Marguerite asks him to place money on a horse and Tuppence swops notes with him. The character is portrayed by Christopher Scoular.