|The Steel Key|
|Directed by||Robert S. Baker|
|Written by||John Gilling|
|Based on||a story by Roy Chanslor|
|Produced by||Robert S. Baker|
|Edited by||Peter Taylor|
|Music by||Frank Cordell|
|Distributed by||Eros Films (U.K.)|
Adventurer Johnny O'Flynn (Terence Morgan) attempts to track down thieves who have stolen a secret military formula for producing hardened steel; but ruthless others who will stop at nothing are also on the trail.
- Terence Morgan as Johnny O'Flynn
- Joan Rice as Doreen Wilson
- Raymond Lovell as Inspector Forsythe
- Dianne Foster as Sylvia Newman
- Hector Ross as Beroni
- Colin Tapley as Doctor Crabtree
- Esmond Knight as Professor Newman
- Arthur Lovegrove as Gilchrist
- Sam Kydd as Chauffeur
- Esma Cannon as Patient in Doctor's Waiting Room
- Michael Balfour as Sailor
- Cyril Smith as Boat Owner (uncredited)
- Ben Williams as Taxi Driver (uncredited)
TV Guide gave the film two out of five stars, calling it a "Silly spy drama...The complicated plot doesn't quite work, but audiences should enjoy it anyway"; while Allmovie wrote, "a little-known British melodrama with some potent talent involved, including actors Terence Morgan and Joan Rice and future Saint director Robert Baker"; and Fantastic Movie Musings and Ramblings concluded, "It's a British B-movie thriller with slight touches of noir to it, and it's moderately entertaining. It's worth a look for the curious, if you can find it."
- "The Steel Key (1953)". BFI.
- "The Steel Key | TV Guide". TVGuide.com.
- "The Steel Key (1953) - Robert S. Baker | Synopsis, Characteristics, Moods, Themes and Related | AllMovie" – via www.allmovie.com.