Bookstore owner Kate Rowan can no longer read murder mysteries. Pitching fictional homicides to customers is one thing, but after getting her heart broken by a real killer, Kate can't crack the spine on a cozy, let alone a noir. Security expert Gary Fenris is haunted by his conscience. Leaving Kate after she learned he took a life to avenge a previous lost love, Gary knows that protecting others from danger — and protecting Kate from himself — is his best shot at atonement. But when Kate's great-aunt is found holding a bloody knife at a crime scene, on a property guarded by Fenris Securities, the only way Kate and Gary can solve the case is by working together. Their sleuthing sends them on a high stakes treasure hunt across London, from the safe deposit boxes in Selfridges department store to the Reading Rooms of the British Library. Back in forced proximity with her killer ex, Kate can't help but wonder if, this time, she can convince Gary to turn the page on murder.