Nick Shannon is a convicted killer. But don’t let that put you off. He had his reasons.After serving time in prison for the mercy killing of his quadriplegic sister, Nick Shannon is finally getting his life back on track working as a fraud detective.Business for Shannon Investigations is booming. They don’t take any prisoners: no one is too big to escape justice, and they never give up.But when their new client, Roger Ackroyd, dies only two days into the contract, it puts a bit of a dampener on things.Nick finds Ackroyd slumped forward over his partners’ desk, face down on the dark green leather top. The police think it was a stroke or a heart attack. But Nick isn’t convinced.The next day, the autopsy reveals poison in Ackroyd’s system.Nick was right. But now he’s the prime suspect.Nick won’t go down without a fight, and that’s exactly what the real killer has in mind.