Read the following paragraph and determine if the hypothesis is true:

Johnny Allegro is a black and white 1949 American film noir, starring George Raft, Nina Foch, Will Geer, and George Macready. An ex-gangster (Raft) working as a federal agent runs afoul of a crime lord (Macready) who enjoys hunting humans for sport. The picture was directed by Ted Tetzlaff and produced by Columbia Pictures.

Hypothesis: Films during this time period were based on true stories when it came to gangster films
It's impossible to say