A Thriller in six episodes by J. D. STRANGE
Episode 4, ' Death Number Six'
The principal characters in the serial are Harvey Mainwaring , a director of North Atlantic Shipping Ltd.
Joan Mainwaring , his daughter
Flint Robertson , another of the firm's directors
Grant Robertson , Flint's nephew Rattenbury, a clerk
Miss Payne, another clerk
Mr. Mawling, an ' American ' gentleman and other characters
Produced by DAFYDD GRUFFYDD