The work of Peter Ketley on Fisheries Research in Devon is being disorganised by a mysterious new method of salmon poaching. His young brother Bob, with the help of two children from London, eventually uncovers and catches the poachers.
Bob Ketley
Susan
Simon
Peter Ketley
George
Tom
Arnold
Mr. Atherton
Mrs. Atherton
Quarryman
Director
Original Story
Adaptation
Camera Operator
Sound Recordist
Music
Production Manager
Producer
Producer's Assistant