Killer In The House: The Murders of Lesley Howell and Trevor Buchanan

The extraordinary true story of an almost perfect murder. This documentary examines the case of one of the UK’s most notorious double murders.

Colin Howell is a married dentist with 4 children and a pillar of the Baptist community in Coleraine, Northern Ireland but he’s having an affair with married Sunday school teacher, Hazel Buchanan.

They agree the only way they can be together is if they murder their spouses. Howell devises a plot to poison them with carbon monoxide fumes and then stage their deaths as a double suicide.

But nearly 20 years later, Colin suffers a crisis of conscience and confesses to the murders, with devastating consequences.

For the first time, the three children of Colin and Lesley Howell speak about life growing up with a father who they later discovered was a murderer and of the enormous impact this shocking crime has had on their lives.