A gripping new crime novel from the global bestseller Cathy Glass writing as Lisa Stone

‘The Darkness Within hooked me from the start. Once you start you won't be able to stop!’ Katerina Diamond, No.1 bestselling author of The Teacher

You know your son better than anyone. Don’t you?

No-one is born evil…are they?

A lorry crashes on a dark wet road. In the wake of the tragedy, a dying man receives another chance at life – but does he really deserve it? And if he lives, will those around him wish he hadn’t?

When critically ill Jacob Wilson has a heart transplant, his behaviour becomes very strange. His worried parents and girlfriend try their best to understand his sudden mood swings, but as things worsen, they begin to live in terror of what they might find in their son’s bedroom next – and as Jacob’s personality morphs, so too do the lives of those around him…

This is a spellbinding crime novel with a dark heart from the worldwide bestseller Cathy Glass.