Private detective John Duval, an ex-lieutenant commander in the Royal Navy and Naval Intelligence, finds himself the prime suspect in a police hunt for a sexual killer when three women are brutally murdered.
James Weber Brown
as John Duval
Indira Varma
as Dr. Catherine Benson
Dervla Kirwan
as DI Jane Ambrose
Annie Cooper
as Tobi Wright
Hugh Bonneville
as Commander William Calthorpe
Tom Beard
as Mr. Bowles
Susie Amy
as Rosemary Calthorpe
Alistair Petrie
as Lieutenant Charles 'Chuck' Carter
Elizabeth Healey
as Rachel Garvie
Vicki Michelle
as Mary Woodward
Angela Thorne
as Mrs. Garvie
Cat Simmons
as DC June Francis
