The Spanish Cape Mystery is a detective novel by the American mystery writing duo Frederic Dannay and Manfred Bennington Lee, who published under the pseudonym Ellery Queen. It was first published in 1935 as the ninth novel in the long-running Ellery Queen series.
The story follows the brilliant amateur detective Ellery Queen as he attempts to take a seaside vacation with his friend Judge Macklin, only to become embroiled in a murder investigation when a body is found on a nearby estate. The novel is a classic whodunit featuring a closed circle of suspects, clever deductions, and a fair-play puzzle for readers.
The novel was well-received and quickly adapted into a film the same year, becoming the first Ellery Queen story to reach the screen. It remains a notable entry in the Golden Age of detective fiction, showcasing the hallmark logical reasoning and twist endings for which Ellery Queen became famous.
