| Hayley Mills | Patricia 'Patti' Randall |
| Dean Jones | Agent Zeke Kelso (Mr. Kelso) |
| Dorothy Provine | Ingrid Randall |
| Roddy McDowall | Gregory Benson |
| Neville Brand | Dan (Bank-robber) |
| Elsa Lanchester | Kipp MacDougall (Mrs. MacDougall) |
| William Demarest | Wilbur MacDougall (Mr. MacDougall) |
| Frank Gorshin | Iggy (Bank-robber) |
| Richard Eastham | FBI Supervisor, Mr. Newton |
| Grayson Hall | Miss Magaret Miller |
| Ed Wynn | Mr. Hofstedder, the watch jeweler |
| Tom Lowell | Canoe Henderson |
| Richard Deacon | Drive-in Manager |
| Iris Adrian | Mrs. Tabin the Landlady |
| Liam Sullivan | Graham (FBI Agent) |
| Don Dorrell | Spires (FBI Agent) |
| Gene Blakely | Cahill (FBI Agent) |
| Karl Held | Kelly (FBI Agent) |
| Ben Lessy | Candy Man |
| Larry J. Blake | Police Officer |
| Syn | The cat |
I thought this film took a little while to get going but its worth the wait. Some funny scenes and good acting. A good family film.