"A captain and his sailors investigate the rampaging "Marsh Phantoms" terrorizing a coastal town, but their search is hindered by a local reverend and a horrifying curse."
Peter Cushing
as Reverend Dr. Blyss
Patrick Allen
as Captain Collier
Oliver Reed
as Harry Cobtree
Yvonne Romain
as Imogene Clegg
Michael Ripper
as Jeremiah Mipps
Martin Benson
as Mr. Rash
David Lodge
as Navy Bosun
Derek Francis
as Squire Anthony Cobtree
Milton Reid
as The Mulatto
Rupert Osborne
as Gerry
Jack MacGowran
as Frightened Man
Daphne Anderson
as Mrs. Rash
Bob Head
as Peg-Leg
Peter Halliday
as Sailor Jack Pott
Terry Scully
as Sailor Dick Tate
Sydney Bromley
as Old Tom Ketch
Gordon Rollings
as Wurzel
Colin Douglas
as Pirate Bosun
Bill Brandon
as Sailor (Uncredited)
Gerry Crampton
as Tattooed Sailor (Uncredited)
Harold Gee
as Fiddler (Uncredited)
Kate O'Mara
as Girl at Inn (Uncredited)
Jack Sharp
as Churchgoer (Uncredited)
Fred Wood
as Parishioner (Uncredited)
Barbara S. Harper
Additional Dialogue
Arthur Grant
Director of Photography
Eric Boyd-Perkins
Editor
Roy Ashton
Makeup Artist
Russell Thorndike
Novel
Peter Graham Scott
Director
Anthony Hinds
Screenplay
Don Banks
Original Music Composer
John Temple-Smith
Producer
Bernard Robinson
Production Design
Don Mingaye
Art Direction
Don Weeks
Production Manager
Peter Medak
Second Assistant Director
John Peverall
Assistant Director
Frieda Steiger
Hairstylist
Tom Edwards
Still Photographer
Philip Martell
Music Director
Lawrence Wren
Painter
James Needs
Supervising Editor
Arthur Banks
Construction Manager
Len Harris
Camera Operator
Harry Oakes
Focus Puller
Terry Poulton
Sound Editor
Les Bowie
Special Effects
Jack Curtis
Electrician
Jock May
Sound Recordist
Brian Johnson
Special Effects Assistant
Paddy Hayes
Stunts
Chris Barnes
Assistant Editor
Molly Arbuthnot
Wardrobe Supervisor
Tilly Day
Continuity
Rosemary Burrows
Wardrobe Master
Ian Scoones