Shooter in the Shadows — David Hewson

Tom Honeyman made his name cracking a horrific double murder in his hometown of Prosper, New York. He got an international best seller out of it, made a small fortune, and left his newspaper reporting days behind.

But was it all based on a lie?

Now, more than a decade after his one and only success, Honeyman's life is in tatters. His wife committed suicide, his daughter hasn't spoken to him in years, and his books don't sell. He's sequestered himself in his wreck of a retreat on an island in Venice, desperate to find the inspiration that will revive his career.
But Tom Honeyman is not alone.

An unseen stranger tells Honeyman he got it wrong all those years ago. And he has just four days to uncover the real murderer.

Tom Honeyman is no longer writing for his livelihood. He's writing for his life.