The dark secrets and deadly betrayals of a lifelong friendship unfold in this gripping psychological thriller.

In The Best Friend, Jessica Fellowes, New York Times bestselling author of the Mitford Murders series and the Downton Abbey companion books, weaves a suspenseful tale of two kindred spirits whose intimate bond is tested by acts of cruelty and love over decades.

Bella and Kate. Kate and Bella. From childhood, they were inseparable, with Bella as the sensible and cautious one, and Kate, the gregarious and slightly dangerous half of the pair. Yet despite their closeness, a fragile trust exists between them, one that is threatened as men enter their lives and a dark seed takes root in their friendship.

As the years pass, the repercussions of both cruelty and love ferment until a single, shocking event pushes their relationship to the brink. Neither will emerge unscathed.

Reminiscent of Elena Ferrante and Sally Rooney, The Best Friend delves into the darkest corners of female friendship, where loyalty and betrayal intersect with deadly consequences. Perfect for fans of Leila Slimani's The Perfect Nanny and Ashley Audrain's The Push, this gripping psychological thriller will keep you turning pages until its haunting conclusion.