Dead At First Sight (Roy Grace, 15)

It is clear that nothing is as it seems when Detective Superintendent Roy Grace is called to investigate the suicide of a woman in Brighton. As his enquiries continue, a handsome motivational speaker, living in the area, comes forward. He's discovered his identity is being used to scam eleven different women who are looking for love online. The first he knew of it was a phone call from one of them, out of the blue, saying: 'You don't know me, but I thought I knew you.'

That woman is now dead.