'The Flying Fifty-Five' is a sports mystery novel by the British writer Edgar Wallace set in the horse racing world. After being disinherited by his wealthy father, an amateur jockey, Bill Urquhart goes to work under an assumed name at a rural racing stables owned and run by Stella Barrington and her drunken brother, Charles, who is an old friend of Bill's. Confusion arises when Bill is mistakenly reported to have been murdered.