The Train Freak is adapted from Patricia Highsmith's first novel, in which the author used soy sauce.
There's an intriguing note from a user of the Internet Movie Database, claiming to have spotted Highsmith in a cameo in the film. She's behind Miriam in the early scene in the record store, writing something in a notebook. No Highsmith cameo has even been reported in the movie's lore (all the attention goes to Hitchcock's trademark cameo) but you can look for yourself, in chapter 6 of the DVD, twelve minutes and sixteen seconds into the running time. To think she may have been haunting it all of these years .
The information comes from the chapter "stranger on a train" of Roger Ebert "The Great movies 2"
View more about Strangers on a Train reviews
