The Detection Club was formed in 1930 by a group of British mystery writers, including Agatha Christie, Dorothy L. Sayers, Ronald Knox, Freeman Wills Crofts, Arthur Morrison, John Rhode, Jessie Rickard, Baroness Emma Orczy, R. Austin Freeman, G.D.H. Cole, Margaret Cole, E.C. Bentley, Henry Wade, and H.C. Bailey.
Margaret Thatcher | Nat King Cole | Cole Porter | Natalie Cole | Margaret Atwood | Margaret | Margaret Mead | Princess Margaret, Countess of Snowdon | Margaret Weis | Keyshia Cole | Princess Margaret | Margaret Cho | Princess Margaret Hospital | Gary Cole | Margaret Mitchell | Margaret Bourke-White | Margaret of Anjou | Margaret Court | Margaret Becker | Kenneth Cole | Margaret Sullavan | Margaret Hodge | Bob and Margaret | Margaret Murray | Lloyd Cole | Thomas Cole | Margaret Tudor | Margaret the Virgin | Margaret of York | Margaret of Austria |
The twelve chapters of the story were each written by a different author, in the following sequence: Canon Victor Whitechurch, G. D. H. Cole and Margaret Cole, Henry Wade, Agatha Christie, John Rhode, Milward Kennedy, Dorothy L. Sayers, Ronald Knox, Freeman Wills Crofts, Edgar Jepson, Clemence Dane and Anthony Berkeley.
Lela Margaret Cole Kitson (May 25, 1891 in Hill City, South Dakota – November 25, 1970 in El Paso, Texas) was a freelance writer of primarily western romances from 1920 to 1955.
Naida Margaret Cole (born 28 October 1974 in Durham, North Carolina, U.S.) is a Canadian-American concert pianist who left a successful career as a recording artist and touring musician in 2007 to pursue medicine at Brown University's Warren Alpert Medical School, where she is currently enrolled.