The location: a picturesque seaside town in 1991. The scene: two bodies in a carbon monoxide filled car. Nurse, Lesley Howell, and police officer, Trevor Buchanan, have apparently taken their own lives...

This is the true story of a Sunday school teacher and respectable dentist and pillar of the community, who formed a murderous partnership.

Hazel Buchanan and Colin Howell met at their local Baptist Church Coleraine, Northern Ireland and embarked upon a passionate a destructive affair, which climaxed in an elaborate plot to commit the "perfect murder".

Based on the true story and starring Genevieve O'Reilly and James Nesbitt, The Secret is dark, gripping and masterfully acted.