Britain's Deadliest Lovers

When a God-fearing dentist and Sunday school teacher fall in love, two things stand in their way - their partners - leading to a double murder.

Hollie Gazzard and Asher Maslin meet in a bar and fall madly in love - but Maslin is hiding his mental illness and when she ends it, he decides no-one can have her.

When Philip Croydon is found dead in a hotel room blindfolded with his hands tied, it's thought he is a victim of a doomed sex game - but his wife hides a dark secret.

Financial problems push Stephen Barnsdale Quean's 10-year marriage to the limit. He strangles wife Chantelle to death, claiming she attacked him.

Financial problems push Stephen Barnsdale Quean's 10-year marriage to the limit. He strangles wife Chantelle to death, claiming she attacked him.

Portuguese national Hugo Quintas is instantly drawn to Hayley Richards. They have a passionate love affair, but when she falls pregnant, his jealousy leads to murder.