First broadcast 4th/11th January 1991.
Commander Adam Dalgliesh's seaside holiday turns perilous when he finds himself investigating a serial killer dubbed "The Whistler" amid suspicious events at a nearby nuclear power plant.
Roy Marsden - Commander Adam Dalgliesh
Susannah York - Meg Dennison
Gemma Jones - Alice Mair
James Faulkner - Dr. Alex Mair
Tony Haygarth - Chief Inspector Terry Rickards
Tom Georgeson - Ryan Blaney
Tom Chadbon - Miles Lessingham
Suzan Crowley - Hilary Robarts
Harry Burton - Dr. Toby Gledhill
Nicola Cowper - Amy Camm
Robert Hines - Neil Pascoe
Helena Michell - Caroline Amphlett
Jamie Newall - Jonathan Reeves
Lisa Ellis - Theresa Blaney (as Lisa Taylor)
Paul Hargreaves - Neville Potter
Ingrid Statman - Christine Baldwin
Robert Cotton - Norman Baldwin
John Judd - George Jago
Mitzi Rogers - Doris Jago
Sophie Ashton - Valerie Mitchell
Simon Cook - Patrick Mitchell
Cherith Mellor - Grace Mitchell
Ralph Michael - Reverend Copley
Aimée Delamain - Mrs. Copley
Margery Withers - Passenger in Car
Richard Hastings - Timmy Camm
Nathan Deakin - Anthony Blaney
Amanda Smith - Maeve Blaney
Georgina Smith - Marie Blaney
Robert Alexander - Colin Lomas
Phillip Reader - Harry (as Phillip Reder)
Paul Dalton - Peter
Stephanie Kapsza - Helen
Nick Haverson - Wayne (as Nicholas Haverson)
Emma Bernard - Barmaid
Anne Leroux - Journalist
Janet Holgate - Church Organist
Malcolm Rennie - Mr. Mair
Guy Faulkner - Young Alex Mair
Kate Beckinsale - Young Alice Mair (voice)
Al Ashton - Det Sgt Stuart 'Jumbo' Oliphant
Benedict Martin - Det Con Price
Philip Dunbar - Dr. Maitland-Brown
