A desperate stranger's final act plunges a woman into a deadly mystery. Neve, whose life in London is crumbling, receives a cottage in Cornwall from Isabelle, a woman she met only once before Isabelle jumped to her death from Waterloo Bridge. Arriving at her new home, Neve discovers it is not the charming retreat she expected, but a sinister bungalow with barred windows, hinting at a dark secret. Neve must unravel the truth behind Isabelle's death and the hidden history of the cottage before she becomes the next victim.

This psychological thriller is recognized for its suspenseful plot and a significant twist ending, as indicated by its bestseller status. The narrative structure, which begins with a dramatic inciting incident and moves to a seemingly idyllic but ultimately menacing setting, is designed to keep readers engaged. The story's focus on a protagonist uncovering a dangerous secret in a secluded location is a common element in the genre, suggesting a pace that accelerates towards a climactic revelation. The reception suggests it is a compelling read for fans of domestic noir and mystery.