Francis, now 17, is still in love with Moondoggy. She can persuade her parents to allow them a journey to Rome, together with two of her and two of his friends. However they have to take an adult with them, so they choose Peter's eccentric aunt. In Rome they get the beautiful guide Daniela, who's fascinating the guys and making especially Gidget jealous. She starts looking elsewhere herself.
| Directing | Paul Wendkos | Director |
| Writing | Katherine Albert | Screenplay |
| Writing | Frederick Kohner | Characters |
| Writing | Ruth Brooks Flippen | Screenplay |
| Writing | Dale Eunson | Screenplay |
| Writing | Ruth Brooks Flippen | Story |
| Sound | John Williams | Original Music Composer |
| Production | Jerry Bresler | Producer |
| Editing | William A. Lyon | Editor |
| Camera | Enzo Barboni | Director of Photography |
| Camera | Robert J. Bronner | Director of Photography |
| Art | Robert Peterson | Art Direction |
| Art | Tony Sarzi-Braga | Art Direction |
| Art | Ferdinando Ruffo | Set Decoration |
| Costume & Make-Up | Mel Berns | Makeup Supervisor |
| Costume & Make-Up | Serafina Calef | Makeup Artist |
| Costume & Make-Up | Amalia Paoletti | Hairstylist |
| Production | Mara Blasetti | Production Manager |
| Directing | Tony Brandt | Assistant Director |
| Directing | Milton Feldman | Assistant Director |
| Costume & Make-Up | Pat Barto | Costume Design |
| Sound | Cyril Collick | Sound Supervisor |
