*LONGLISTED FOR THE CWA DAGGER AWARD FOR BEST HISTORICAL CRIME NOVEL OF THE YEAR*

A dark, captivating novel of family secrets, desperate ambition and the deepest betrayal.

TO BECOME ONE OF THEM, SHE WILL DO WHATEVER IT TAKES...

1938. Gillian Larking is used to blending in and going unnoticed, until she is befriended by her new roommate at boarding school, the vibrant and spirited Violet Claybourne. As the Christmas holidays approach, Gilly can't believe her luck when Violet invites her to spend them at her home, the crumbling Thornleigh Hall.

At Thornleigh, Gilly is dazzled by the family's faded grandeur, and above all by Violet's beguiling older sisters who seem to accept her as one of their own. But following a terrible incident in the house's grounds, Gilly begins to realise the Claybourne sisters aren't quite what she thought they were. And if she's to survive in their world, she may have to become just like them . . .

'An evocative mystery . . . atmospheric and gripping. An ideal read for winter days' Good Housekeeping

'A stern boarding school, a dilapidated country mansion and an old-fashioned asylum are the gloomily atmospheric settings for a gothic-tinged story that explores the troubled minds and volatile emotions of the Claybourne sisters and their erstwhile friend, the impressionable Gillian Larking in 1930s England . . . Taut, tense and melancholy, it's a brilliant claustrophobic study of gaslighting and manipulation, as a family's ambitions overwhelm their better impulses' Daily Mail

'Atmospheric and chilling, this is one to curl up with' Heat Magazine, Book of the Week

'Pulls the reader into its dark depths like quicksand. I couldn't put it down' Hester Musson, author of THE BEHOLDERS

'Utterly spellbinding. Atmospheric and full of secrets waiting to be untangled' Louise Hare

'Dark, chilling and tightly plotted, this is the perfect read for a winter's night' Sarah Clegg, author of THE DEAD OF WINTER

'A moving tale of class, duplicity and the irreversible consequences of betraying a friendship. I devoured this wonderful book' Jo Leevers, author of THE LAST TIME I SAW YOU

'With shades of Sarah Waters and The Vanishing Act of Esme Lennox, this is a riveting story about sisters, secrets and the lengths people will go to fit in with others. I raced through it because I struggled to put it down!' Caroline Bishop, author of THE LOST CHAPTER

''Stunning . . . a dark and immersive plot that becomes more gripping and sinister with every turn of the page' Louise Douglas, author of THE HOUSE BY THE SEA

'An evocative, gothic treat, cleverly crafted. Emily's writing is exceptionally transporting. I read page after page of escalating tension with my heart in my mouth. A dark and delicious tale' Amanda Geard, author of THE MIDNIGHT HOUSE