Dr. Paul Rankin (played by Robert Beatty) is a protagonist in Counterblast.
Dr. Bruckner, the Beast of Ravensbruck (played by Mervyn Johns) appears in Counterblast.
Sister 'Johnnie' Johnson (played by Margaretta Scott) appears in Counterblast.
Tracy Heart (played by Nova Pilbeam) appears in Counterblast.
Martha Lert (played by Sybilla Binder) appears in Counterblast.
Mrs. Cole (played by Marie Lohr) appears in Counterblast.
Professor Inman (played by Karl Stepanek) appears in Counterblast.
M. W. Kennedy (played by Alan Wheatley) appears in Counterblast.
