Episode 1
Episode 1
When Colin Howell and Hazel Buchanan meet at their local Baptist Church in rural Northern Ireland, they start an affair which will have cataclysmic consequences.
TV series
The Secret
20161 season6.3 / 10
The true story of a Sunday school teacher and respectable dentist and pillar of the community, who formed a murderous partnership.
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Where to watch in United States
Checked Jul 22, 2026
Synopsis
The true story of a Sunday school teacher and respectable dentist and pillar of the community, who formed a murderous partnership.
Season 1 episodes
Watch options above are for the show and may vary by season or episode.
Episode 2
Episode 2
Colin and Hazel carry out his plan to kill Lesley and Trevor, and stage it to look like a suicide pact. But will the community and the police believe their story?
Episode 3
Episode 3
As the inquest approaches, Colin and Hazel have to hold their nerve. But even if they do get away with it, can their relationship survive?
Episode 4
Episode 4
The past catches up with Colin as he is finally driven to confess his crime. But when Hazel pleads not guilty, will Colin take all the blame?
Episode information updated Jul 22, 2026
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