Chief Constable Sir Clinton Driffield’s holiday on the coast is interrupted when he’s asked to assist with the investigation of a murder on a nearby country estate. As Sir Clinton, his friend Wendover, and the local police work to uncover who’s behind the murder, they encounter an expanding web of clues, characters with possible motives, questions related to the large inheritance involving the estate, and additional misdeeds. Working against time and the tides, Sir Clinton and his team must piece together an increasingly complex puzzle of clues, potential suspects, and crimes.

Mystery at Lynden Sands is the third in a series of detective novels by J. J. Connington that feature Sir Clinton Driffield. It was first published in Britain in 1928.