Dossier on Dumetrius

Dossier on Dumetrius is a 1951 Australian radio serial by Lindsay Hardy. It was hugely popular and was adapted into a book and a film. There were also several sequels.
The lead role was played by Bruce Stewart who became an important writer.

Premise

Major Keen of MI5 tracks down the criminal Dumetrius.

Cast

Bruce Stewart as Major Keen
Dinah Shearing as Hedy Bergner
Guy Doleman as Dumetrius
Frank Waters as Sgt Tom Coutts
Moray Powell as Col Milo Julian Fentris
Alan White as Hank Godowski
Reg Goldsworthy as Peter Ridgeway
Ruth Cracknell as Dora

Adaptations

Hardy adapted the serial into a 1953 novel Requiem for a Redhead. This was filmed in England as Assignment Redhead.

Sequels

The series was very popular. There were four sequels, with Stewart reprising his role in the first two:

Deadly Nightshade, over 104 episodes in 1952. This was turned into a 1954 novel The Nightshade Ring.
26 Hours which aired 1952–53. This was turned into the 1955 novel Show No Mercy aka The Faceless Ones.
Two Roads To Samarra
''The Smell Of Terror''