The Seven Dials Mystery is a detective novel by Agatha Christie, first published in the UK by William Collins & Sons on 24 January 1929, and in the US by Dodd, Mead and Company later in the same year. Christie brings back the characters from an earlier novel, The Secret of Chimneys (1925): Lady Eileen (Bundle) Brent, Lord Caterham, Bill Eversleigh, George Lomax, Tredwell, and Superintendent Battle.
