Set on the eve of World War I, the novel follows an ordinary man who becomes entangled in a dangerous plot after a mysterious stranger shows up at his apartment, claiming to be a spy. When the stranger is murdered, the protagonist is falsely accused and becomes a fugitive, fleeing to the Scottish highlands. He must unravel a conspiracy of international espionage and prevent a political assassination to clear his name.

Set during World War II, the novel revolves around a ruthless German spy known as 'The Needle' due to his preference for a stiletto as his killing tool. His mission is to uncover the Allies' invasion plans and relay them to Hitler, potentially changing the course of the war. However, his plans are threatened when he becomes stranded on an isolated island with a young, lonely woman and her disabled husband, leading to a tense game of cat and mouse.

"The Crow Road" is a darkly humorous and complex tale of a Scottish family, told through the eyes of a young man who is trying to make sense of his life and the mysterious disappearance of his uncle. The protagonist's journey takes him through various experiences including love, death, and the discovery of a novel written by his missing uncle. The narrative is a fascinating blend of family saga, coming-of-age story, and mystery thriller, all set against the backdrop of Scotland's landscapes and culture.

In "Old House of Fear," the protagonist, an American envoy, travels to a remote Scottish island to negotiate the purchase of an old mansion. Upon arrival, he encounters an atmosphere of mystery and terror, fueled by local superstitions and the eerie presence of the mansion itself. As he delves deeper, he faces a series of supernatural occurrences and a sinister conspiracy, challenging his skepticism and forcing him to confront his deepest fears. The novel blends elements of Gothic horror with a modern psychological thriller, creating a gripping and suspenseful narrative.

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.

This book is a gripping crime novel set on the remote Shetland Islands, where Detective Jimmy Perez returns home with his fiancée, only to be caught in a murder investigation when a renowned scientist is found dead. As a storm isolates the island from the outside world, Perez must navigate through a close-knit community full of secrets and lies to uncover the murderer. The harsh and beautiful landscape of the Shetlands, along with the complex relationships and tensions within the small community, provide a compelling backdrop to this mystery, testing Perez's detective skills and understanding of human nature to the limits.