Donald Thomas (1926-) was born in Somerset and educated at Queen's College, Taunton, and Balliol College, Oxford. He holds a personal chair in the University of Wales, Cardiff, now Cardiff University. His numerous crime novels include two collections of Sherlock Holmes stories and a hugely successful historical detective series written under the pen name Francis Selwyn and featuring Sergeant Verity of Scotland Yard, as well as gritty police procedurals written under the name of Richard Dacre. He is also the author of seven biographies and a number of other non-fiction works, and won the Gregory Prize for his poems, Points of Contact. He lives in Bath with his wife.