Mr Marble is in serious debt, desperate for money to pay his family's bills, until the combination of a wealthy relative, a bottle of Cyanide and a shovel offer him the perfect solution. In fact, his troubles are only just beginning. Slowly the Marble family becomes poisoned by guilt, and caught in a dangerous trap of secrets, fear and blackmail.

Mr Marble is in serious debt, desperate for money to pay his family's bills, until the combination of a wealthy relative, a bottle of Cyanide and a shovel offer him the perfect solution. In fact, his troubles are only just beginning. Slowly the Marble family becomes poisoned by guilt, and caught in an increasingly dangerous trap of secrets, fear and blackmail. Then, in a final twist of the knife, Mrs Marble ensures that retribution comes in the most unexpected of ways ...

First published in 1926, C. S. Forester's gritty psychological thriller took crime writing in a new direction, portraying ordinary, desperate people committing monstrous acts, and showing events spiralling terribly, chillingly, out of control.