'The most brilliant Norfolk-set thriller since Elly Griffiths' Ruth Galloway books' DAILY MIRROR

Cam Killick has made a promise to a dead man. And he's going to keep it if it kills him.

Another day on the Norfolk Broads, and another underwater problem for salvage diver Cam Killick to solve. Today, it's removing the huge rock jamming the mechanism of a crucial swing bridge. The knots have been double checked; the winches are set. And then the 'rock' splits apart, revealing the bodies of two people, partially mummified, curled into each other, clearly having died in each other's arms.

This chilling discovery is now a problem for DI Claire Rogers of the Norfolk CID - but Cam can't let it go. As the dead man's hand was released from its makeshift coffin it tangled in his in a macabre parody of a handshake - and though he knows it's foolish, he can't help thinking that that handshake sealed a vow.

Cam knows he won't rest until he's uncovered the story of these ill-fated lovers. But what neither he nor Claire can predict is how much danger they will bring on themselves as they seek to learn who the couple were, and why they were killed - and what their deaths leave behind.

'Rob Parker is a master of the stone-cold twist' JANICE HALLETT

'Will thrill you one minute and rip your heart out the next' ROBERT RUTHERFORD

'Immersive and action-packed thriller … Perfect for fans of M. W. Craven' JO CALLAGHAN