Watch 999: Killer on the Line

The case of farmer Robert Wilson, who ran over his wife with a tractor but claimed it was wan accident until it emerged he had been living a double-life.

The story of Robin Garbutt, who murdered his wife and then called 999 to report that she had been killed by an armed robber in their North Yorkshire home.

The story of Alan Evans, who tried to get away with murdering his wife by pretending she had fallen down the stairs after she found out about his affair.

The story of Anna Hurd, who was murdered by her controlling boyfriend Anthony Mitchell after she tried to break up with him.

The story of Jennifer Pan, who was found guilty of staging a home invasion with the intention of killing her parents.

The story of Paul Crymble, who was killed by his wife and her lover who then lied to police about the chain of events in the hopes of escaping prosecution.

The story of Alan Jermey, a martial arts expert from Surrey who murdered his partner after she told him she had fallen in love with her boss.

After pub landlord Steven French murdered a customer at the Wisbech Arms in Cambridgeshire, he and his partner invented an elaborate cover story to avoid justice.