The Steel Key

An adventurer investigates the theft of a formula for hardened steel, assisted by his girlfriend.

• Robert S. BakerDirector
• John GillingScreenplay
• Frank CordellOriginal Music Composer

• Terence MorganJohnny O'Flynn
• Joan RiceDoreen Wilson
• Raymond LovellInspector Forsythe
• Dianne FosterSylvia Newman
• Colin TapleyDr. Crabtree
• Esmond KnightProf. Newman
• Mark BakerDr. Metcalfe
• Cyril ConwaySgt. Cove
• Hector RossBeroni
• Arthur LovegroveGilchrist
• Esma CannonPatient in Doctor's Waiting Room
• Sam KyddChauffeur