Fireman Save My Child started out as an Abbott and Costello picture, but then Lou Costello became ill with rheumatic fever. Or Costello turned down the script. Or the team decided to film Abbott and Costello Meet Dr. Jekyll and Mr. Hyde instead. Whatever the reason, when the film was finally released, Hugh O'Brien and Buddy Hackett were playing the roles originally intended for Bud and Lou (A and C can still be seen in some long-shots, however). Set in San Francisco in the early 1900s, the film casts Hugh and Buddy as a pair of bumbling firemen. Buddy invents a new fire-extingushing device, which the bad guys attempt to steal. Naturally, the film affords plenty of opportunity for slapstick chase sequences, and even allows Buddy Hackett time to do a potted version of his "inferiority complex" monologue. Top-billed over O'Brien and Hackett is the zany musical aggregation of Spike Jones and His City Slickers, who likewise are given several opportunities to shine.
~ Hal Erickson, All Movie Guide