The envelope is unremarkable. There is no return address. It contains a single, folded, sheet of white paper. But for the nine complete strangers who receive it - each of them recognising just one name, their own, on the enclosed list - it will be the most life altering letter they ever receive. It could also be the last, as one by one, they start to meet their end. But why? The unputdownable sequel to 'The Kind Worth Killing'.