The Drowning Man by Michael Robotham

As The Drowning Man by Michael Robotham opens,  DI Vincent Ruiz is clinging to a buoy in the River Thames with gunshot wounds. He has no recollection of the shooting or how he ended up in the river. Many of his colleagues believe he is faking amnesia to cover for being a bent cop. Ruiz has to retrace his steps to find out what happened.

The only clue is a photograph found in his pocket of Mickey Carlyle, a seven-year-old girl who went missing three years earlier. The case continues to haunt him even though Mickey is generally assumed dead and a neighbour with paedophilic tendencies has in fact been convicted of her murder. But Mickey’s body has not been found and Ruiz is certain that Mickey is still alive and that the man in prison is not gulity.

Under investigation by his colleagues, he turns to Joe O’Loughlin, a clinical psychologist, who he hopes can unlock his memories. As his memories gradually return, he learns everything that has happened has to do with a ransom payment for Mickey gone wrong but his investigations are stymied by the resistance of his bosses, who don’t want a convicted paedophile to be released from prison.

This is an action-packed and enthralling crime-thriller and a story of grief, vengeance, and the search for redemption. I like Ruiz as he has a great sense of humour.​