His wife's sister
(Book)

A woman is found alone and confused wandering through remote woodland. She claims to be Mara Sitwell, the little girl who mysteriously vanished from her home nineteen years ago. She says she was abducted and has been held captive in an underground cell. But not everyone's convinced she's telling the truth. Her brother-in-law, Damian, thinks she's hiding a dark secret and so psychologically scarred she's a danger to his young family. But no one's listening to him. His only choice is to prove what really happened to Mara. But the truth is never easy to uncover, especially when it's been buried so deep...