Speedy Death (1929) is the debut novel by Gladys Mitchell, introducing her famous detective, the unorthodox psychoanalyst Mrs. Beatrice Bradley, who investigates a murder at a country house party where a woman's body is found in a bathtub, leading to a series of events and suspects among the guests. The book is a classic Golden Age mystery, known for its witty dialogue, complex plot, and the introduction of the eccentric but brilliant Mrs. Bradley, who uses her psychological insights to solve the crime.