The Riddle of the Sands: A Record of Secret Service is a 1903 novel by Erskine Childers. It is an early example of the espionage novel, with a strong underlying theme of militarism and an early example of the invasion novel genre which predicted war with Germany and called for British preparedness. Robert Erskine Childers DSC (25 June 1870 - 24 November 1922), universally known as Erskine Childers, was the author of the influential novel The Riddle of the Sands and an Irish nationalist who smuggled guns to Ireland in his sailing yacht Asgard. He was executed by the authorities of the nascent Irish Free State during the Irish Civil War. He was the son of British Orientalist scholar Robert Caesar Childers; the cousin of Hugh Childers and Robert Barton; and the father of the fourth President of Ireland, Erskine Hamilton Childers.