Mark of the Phoenix is a 1958 British 'B' drama film directed by Maclean Rogers and starring Julia Arnall, Sheldon Lawrence and Anton Diffring.^[2] An American jewel thief comes into possession of a newly developed metal.

A newly developed and valuable metal is stolen and formed into a cigarette case for transportation to East Germany, but an American jewel thief comes into possession of it and finds himself a target.

• Julia Arnall – Petra
• Sheldon Lawrence – Chuck Martin
• Anton Diffring – Inspector Schell
• Eric Pohlmann – Duser
• George Margo – Emilson
• Michael Peake – Koos
• Martin Miller – Brunet
• Roger Delgado – Devron
• Bernard Rebel – Vachek
• Frederick Schrecker – Van de Velde
• Pierre Chaminade – hotel receptionist
• Corinne Grey – bride
• Jennifer Jayne – Airline Ticket Clerk
• Edouard Assaly – cafe waiter
• Victor Beaumont – travel clerk
• Norma Parnell – 2nd airline ticket clerk
• Howard Greene – young detective
• Tom Clegg – strong man
• Patrick Troughton – police officer (uncredited)

The Monthly Film Bulletin wrote: "This spy story has all the usual trimmings – tough, handsome American jewel thief, portly art-collector gang leader, shot scientist, secret formula and brutal foreign agents – but almost makes up for their familiarity by lively pacing. This turns out to be the film’s sole virtue, however, since direction, dialogue and performances are on a distressingly amateurish level.”^[3]

In British Sound Films David Quinlan wrote: ''Feverishly complicated thriller, not too well acted.''^[4]

The Radio Times Guide to Films gave the film 1/5 stars, writing: "This dismal low-budget thriller has a corkscrew plot involving rare metals, jewel thieves, international blackmail, the Cold War and much else. [...] The mediocre cast is typical of British B-movies of the period, with the sole exception of Anton Diffring."^[5]