In this psychological thriller, the story revolves around a troubled woman who becomes entangled in a missing persons investigation that promises to send shockwaves throughout her life. As she rides the train every day, she fantasizes about the seemingly perfect couple she sees from her window, until one day she witnesses something shocking in their backyard. Her decision to report it to the authorities leads her down a dark path of intrigue, as she struggles to piece together her fragmented memories and the tangled web of lies, deceit, and complicated relationships that surround the case. Her involvement becomes increasingly dangerous as she tries to prove not only what she saw, but also her own worth and sanity.

In "The Turn of the Key" by Ruth Ware, a young woman named Rowan Caine takes a job as a live-in nanny at a luxurious smart home in the Scottish Highlands. However, the seemingly perfect opportunity quickly turns into a nightmare as Rowan discovers the dark secrets hidden within the house and the tragic events that have unfolded in the past. As strange occurrences escalate and tensions rise, Rowan becomes the prime suspect in a murder investigation, desperately trying to prove her innocence and uncover the truth before it's too late.

A reclusive writer receives an unexpected invitation to a bachelorette party of an old friend she hasn't seen in years. Curiosity gets the best of her, and she attends the gathering at a secluded cabin in the woods. As the weekend unfolds, tensions rise and secrets are revealed, leading to a shocking and tragic event that leaves the protagonist questioning her own sanity and the motives of those around her.

"The Widow" is a gripping psychological thriller that delves into the complex and secretive world of a woman named Jean Taylor. When her husband, Glen, becomes the prime suspect in the disappearance of a toddler, Jean is forced to confront her own beliefs and loyalty. Told from multiple perspectives, the narrative explores the blurred lines between truth and deception, unveiling shocking revelations and challenging the reader's perception of innocence and guilt.