Genevieve O'Reilly

Brand New Drama, The Secret, starts Friday 29 April on ITV

James Nesbitt plays Colin Howell, a respectable dentist and pillar of the community, who became a killer in partnership with a Sunday school teacher, Hazel Buchanan (Genevieve O'Reilly). Howell and Buchanan met at their local Baptist Church in Coleraine, Northern Ireland and they embarked upon a passionate and destructive affair, which climaxed in an elaborate plot to kill both their partners.