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.
| Directing | William Hanna | Director |
| Visual Effects | Ray Patterson | Animation |
| Visual Effects | Ed Barge | Animation |
| Visual Effects | Irven Spence | Animation |
| Visual Effects | Kenneth Muse | Animation |
| Directing | Joseph Barbera | Director |
| Production | Fred Quimby | Producer |
| Sound | Scott Bradley | Original Music Composer |
