A marriage made in hell

They met while working together in Georgia: 17-year-old Larry Kelley and 31-year-old wife and mother Gina Spann.

Their unusual friendship soon blossomed into something much more when Gina invited Larry to live with her, her husband Kevin and their teenage son.

But it didn't stop there. Gina enlisted Larry and three of his friends to murder her husband and cash in on his $300,000 insurance policy.

So on Mother's Day 1997, two teenagers knocked on Spann's door and when Kevin opened it, they shot him point-blank.

Police zeroed in on the motley crue soon enough - Gina, Larry and two of his friends would each receive life sentences for the ruthless murder of Kevin Spann.

In a case as twisted and shocking as fiction, Wensley Clarkson explores this volatile web of sex, greed and murder that ended in deadly disaster.