The Crumbles Murders are two separate and unrelated crimes which occurred on a shingle beach located between Eastbourne and Pevensey Bay, England—locally referred to as "the Crumbles"—in the 1920s. The first of these two murders is the 1920 bludgeoning murder of 17-year-old Irene Munro, committed by two men: Jack Field and William Gray. The second murder to occur upon the Crumbles is the 1924 murder of 38-year-old Emily Kaye, who was murdered by her lover, Patrick Mahon.
The three perpetrators of the two "Crumbles Murders" were all tried at Lewes assizes before Mr Justice Avory. All three were executed by hanging at Wandsworth Prison. The executioner of all three men was Thomas Pierrepoint.