The Patient in Room 18 is a 1929 mystery novel written by Mignon G. Eberhart. Eberhart's first published novel, it follows the adventures of nurse Sarah Keate, who would later appear in six more of Eberhart's works, and became one of the most popular mystery characters of the time.

The village of Badger's Drift is the essence of tranquillity. But when resident and well-loved spinster Miss Simpson takes a stroll in the nearby woods, she stumbles across something she was never meant to see, and there's only one way to keep her quiet. Miss Simpson's death is not suspicious, say the villagers. But Miss Lucy Bellringer refuses to rest: her friend has been murdered. She is sure of it.

While hot on the heels of serial coupon-racketeer Gordon Ginner, Chief Inspector MacDonald of Scotland Yard receives word of an intriguing incident up in Lancashire – the summer cottage of local farmer Giles Hoggett has been broken into, with an assortment of seemingly random items missing which include a complete reel of salmon line, a large sack, and two iron dogs from his fireplace. What first appears as a simple break-in quickly spirals into a mystery of contested land grabs for fishing between farmers, made all the more enticing to MacDonald when a body is then found in the river.

Miss Marple encounters a compelling murder mystery in the sleepy little village of St. Mary Mead, where under the seemingly peaceful exterior of an English country village lurks intrigue, guilt, deception and death. Colonel Protheroe, local magistrate and overbearing land-owner is the most detested man in the village. Everyone—even in the vicar—wishes he were dead. And very soon he is—shot in the head in the vicar's own study. Faced with a surfeit of suspects, only the inscrutable Miss Marple can unravel the tangled web of clues that will lead to the unmasking of the killer.

Summer, 1947. Kate Herrick, a war widow, returns to her childhood home for a final visit before the house is sold. But Rose Cottage is not the idyllic paradise she remembers from her youth and someone has been there before her. As Kate uncovers an old secret that haunts the home she thought she knew, she is forced to confront a dark truth from her own past.... Beyond the weedy garden with its riot of rose bushes, nothing had changed. And someone was crossing the bridge to approach the garden gate. Someone I knew well....