Martin Edwards has received the CWA Diamond Dagger, the highest honour in British crime writing, given for the sustained excellence of his contribution to the genre. His latest novels are the stand-alone puzzle mystery Miss Winter in the Library with a Knife and the Rachel Savernake books, most recently Hemlock Bay. The Rachel Savernake series has received two nominations for the CWA Historical Dagger and three shortlistings for the eDunnit award for best crime novel. British librarians awarded him the CWA Dagger in the Library in 2018 in recognition of his body of work. His eighth and latest Lake District Mystery is The Crooked Shore and earlier books in the series include The Coffin Trail, short-listed for the Theakston's prize for best British crime novel. Seven books in his first series, featuring Liverpool lawyer Harry Devlin, starting with the CWA John Creasey Dagger-nominated All the Lonely People, have been reissued by Acorn in new editions with introductions by leading writers including Ann Cleeves and Val McDermid.

Martin is a well-known crime fiction critic, and series consultant to the British Library's Crime Classics. His ground-breaking study of the genre between the wars, The Golden Age of Murder won the Edgar, Agatha, H.R.F. Keating and Macavity awards. The Story of Classic Crime in 100 Books won the Macavity and was nominated for four other awards, while Howdunit, a masterclass in crime writing by members of the Detection Club, won the H.R.F. Keating prize and was nominated for five other awards. His ground-breaking history of the genre, The Life of Crime, won the Edgar, H.R.F. Keating, Macavity, and Anthony awards.

In addition, Martin has won lifetime achievement awards for his short fiction (the Golden Derringer), his non-fiction (the Poirot award) and his scholarship (the George N. Dove award). He has written a stand-alone novel of psychological suspense, Take My Breath Away, and a much acclaimed novel featuring Dr Crippen, Dancing for the Hangman. He also completed Bill Knox's last book, The Lazarus Widow. He has published many short stories, including the ebooks The New Mysteries of Sherlock Holmes and Acknowledgments and other stories. 'The Bookbinder's Apprentice' won the CWA Short Story Dagger, for which he has been nominated for three other stories.

He has edited over 50 anthologies, which have yielded many award-winning stories, and published diverse non-fiction books, including a study of homicide investigation, Urge to Kill. An expert on crime fiction history, he is archivist of both the Crime Writers' Association and the Detection Club. He was elected eighth President of the Detection Club in 2015, spent two years as Chair of the CWA, and posts regularly to his blog, 'Do You Write Under Your Own Name?' He is consultant to the bestselling British Library Crime Classics.