Trusted friends become suspects when a 13 year old girl is found unconscious in a communal garden. Lisa Jewell's new novel, The Girls is out on the 2 July; but you can get your hands on a copy before everybody else here.
Watch the video to see Lisa read an exctract of The Girls exclusively for Mumsnet Book Club.
Don't forget, if you're lucky enough to receive a free copy of this book we do ask that you tell us what you thought about it on the thread below, or in our Book Reviews section.
This giveaway is sponsored by Century