My devout Christian dad gassed my mum in double murder on my birthday… he was free until shock confession 18 years later

THEY sat together each week each week at Coleraine Baptist Church, in Northern Ireland, but the wholesome friendship between the Howells and Buchanans hid a dark secret. Despite their devout appearance, dad-of-four Colin Howell and mum-of-two Hazel Buchanan were conducting a secret affair – which would have deadly consequences. In May 1991, the lovers callously…