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.
James Darren
as Moondoggie (Jeffrey Matthews)
Cindy Carol
as Frances "Gidget" Lawrence
Jessie Royce Landis
as Albertina Blythe
Cesare Danova
as Paolo Cellini
Danielle De Metz
as Daniela
Joby Baker
as Judge
Trudi Ames
as Libby Bennett
Noreen Corcoran
as Lucy McDougall
Peter Brooks
as Clay Anderson
Lisa Gastoni
as Signora Cellini
Claudio Gora
as Alberto
Don Porter
as Russell Lawrence
