Formed c. 1930, the Detection Club is a group of (mostly British) mystery writers who occasionally write collaborative works. Presidents: G.K. Chesterton (1930–1936) E. C. Bentley (1936–1949) Dorothy L. Sayers (1949–1957) Agatha Christie (1957–1976) Lord Gorell (1957–1963) Julian Symons (1976–1985) H. R. F. Keating (1985–2000) Simon Brett (2000–2015) Martin Edwards (2015–) Past members include: Anthony Berkeley, G.D.H. Cole, Margaret Cole, Freeman Wills Croft, Clemence Dane, Edgar Jepson, Milward Kennedy, Ronald Knox, John Rhode, Henry Wade, Victor L. Whitechurch, Gladys Mitchell, E.C.R. Lorac and Helen de Guerry Simpson