While perusing the books of an engineering company, fastidious auditor Frank Manning encounters rum goings on when he is approached by a woman who claiming she is being blackmailed. She begs him to find certain letters and he eventually agrees. Having obtained the letters, he takes them to a specified address where, to his horror, he finds a man, fully clothed, dead in the bath.
Dermot Walsh
as Frank Manning
Hazel Court
as Clare Manning
Hermione Baddeley
as Madame Del Mar
Alexander Gauge
as Smith
Bill Travers
as Rex
Archie Duncan
as Jim Fenton
James Vivian
as Larry Fenton
Frederick Schrecker
as Plattnaur
John Penrose
as Paulson
Hugh Latimer
as Inspector Barlow
Beryl Baxter
as Plattnauer's Accomplice
Gwen Bacon
as Matron
