You're Only Young Twice!
Professor "Haywire" Hayman
Connell O'Grady aka Dan McEntee
Sir Archibald Asher
Adolphus Hayman
Ada Shore
Sheltie
Lord Carshennie
Nellie Kelly
The Bedellus
Lady Duffy
Maither
Radio reporter
Professor Baikie
Miss Mear
Milligan
Desk Sergeant
Student
Police Constable
