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.

"The Appeal" is a contemporary mystery novel that unfolds through a series of emails, texts, and documents as readers are invited to play detective. The story revolves around a small-town theater group that becomes embroiled in a complex case following a young girl's diagnosis with a rare form of cancer. As the community rallies to raise funds for her treatment, a new couple's arrival in town sets off a chain of events that leads to a murder. The novel challenges the reader to piece together clues and correspondences to uncover the truth behind the façade of charity, revealing the dark undercurrents of ambition, manipulation, and deceit within the seemingly close-knit community.