As a marriage counsellor, Harper thought she'd seen it all - until Maggie and James walked in. Glamorous and guarded, the couple presents a mystery Harper can't crack. Maggie talks circles around their issues, hinting at a vague 'betrayal', while James says almost nothing. Neither is telling her the whole truth. Drawn to her new clients, Harper begins to blur the boundaries of professionalism - looking them up online, watching from a distance. She's not doing anything wrong - she just wants to help. But one impulsive, drunken night, Harper crosses a line she can't uncross. Wracked with guilt, Harper attempts to end their sessions. But Maggie refuses to let go. Then, she vanishes. Now, Harper must uncover what really happened between Maggie and James - and confront the dark secret at the heart of their marriage. A twisty, gripping psychological thriller about a dark secret at the heart of a marriage - and the woman who gets sucked in. Perfect for fans of Freida McFadden, Jeneva Rose, K.L. Slater and Claire Douglas.