The sleepy fishing village of Glenkeel in Ireland's County Donegal is about to have its population reduced by one. Sergeant McGing will be delighted. He's dreamed of a good murder for years. But someone's ahead of him. They already know who's done it. And the murderer knows they know when he opens a letter signed 'The Bogmailer'.

• Shane Connaughton
• Patrick McGinley

• Ian Bannen
• Peter Firth
• Alun Armstrong