Murder in Eden was a television series directed by Nicholas Renton and featuring Ian Bannen, Peter Firth and Alun Armstrong. It was first aired on the BBC in 1991 in three episodes of 55 minutes. It was set in the local area here in Donegal where a landlord of a pub murders his barman. He is blackmailed by one of the other inhabitants, while the police are busy hunting for the killer. It is based on the novel Bogmail by Patrick McGinley.
Here are the three episodes.
https://www.youtube.com/watch?v=iAbQZGJkceg
https://www.youtube.com/watch?v=cD-LllcWPVQ
https://www.youtube.com/watch?v=oU7DS2uCztk