Crossword clues for Mystery writer John Dickson _____:CARRLocked room mystery writer John Dickson __CARRMystery writer John Dickson ___CARRMystery writer John Dickson __CARRMystery writer John DicksonCARRMystery writer John Dickson _____CARRJohn Dickson ___, mystery writer.CARRWriter of sealed room mysteries, John Dickson ___.