Cast
Dermot Walsh
Guy Thornton
Hazel Court
Margaret Thornton
Joss Ambler
Yacht Port Manager
Hugh Burden
Dr. Fawcett
Mignon O'Doherty
Mrs. Manley
Hugh Latimer
Peter
Joan Carol
Mrs. Martineau
John Robinson
Prof. Martineau / Mansel
Joss Ackland
Ron, 2nd Fisherman
John King-Kelly
Sid, 3rd Fisherman
Laidman Browne
Coroner
Meadows White
Mr. Leech, Surveyor
Patricia Owens
Party Girl (Joyce)
Melissa Stribling
Party Girl (Vera)
Ian Carmichael
Bernard
Geoffrey Dunn
Strange Passenger
Pat McGrath
Bert, 1st Fisherman
Crew
Directing
Vernon Sewell
Director
Editing
Francis Beiber
Editor
Production
Henry Geddes
Associate Producer