Elenco

• Lionel Jeffries — Arthur Lee
• Avice Landone — Mary Lee
• Jack Watling — John Lee
• Patricia Owens — Connie Lee
• Brian Worth — Michael Collins
• Gordon Jackson — Leonard
• Arthur Lowe — Wilkins
• Cyril Chamberlain — Clarkson
• Erik Chitty — cast
• Frazer Hines — Boy
• Alastair Hunter — cast
• John Pike — Boy
• Peter Swanwick — cast

Realização

• Henry Cass — director

Montagem

• Maurice Rootes — editor

Câmara

• Monty Berman — director of photography

Som

• H.C. Pearson — sound recordist

Produção

• Monty Berman — producer
• Robert S. Baker — producer

Direção de arte

• John Stoll — art direction

Equipa técnica

• John Gilling — script