Tom has amnesia and believes he's a mouse. Jerry, finding him more obnoxious as a fellow rodent than as a cat, seeks to cure him with a blow to the head.
June Foray
Tom's Squeaks (voice) (uncredited)
William Hanna
Tom / Jerry (voice) (uncredited)
Lillian Randolph
Mammy Two-Shoes (voice) (uncredited)
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