Former barrister and businessman from Wales. Writer, podcaster, historian. CWA Dagger nominee. 2025 HWA Gold Crown Judge.

Author of 6 books in the Frank Merlin WW2 detective series:
Princes Gate (1) now retitled The Embassy Murders
Stalin’s Gold (2) now retitled In The Shadows Of The Blitz
Merlin At War (3) now retitled The French Spy
A Death In Mayfair (4)
Dead In The Water (5)
Death Of An Officer (6)

Some reviews of the Merlin series:
‘Immersive, authentic, evocative’ Fiinancial Times
‘Must-read for murder mystery lovers’ Daily Mail
‘Masterly….compelling’ Bestselling historian Andrew Roberts'
‘Unputdownable’ WW2 historian Robert Lyman
‘Dead In The Water is to my shame the first Mark Ellis book I’ve read. If the others evoke a vanished London so impressively, are graced with such complex plots and deep characterisation, and, above all, are written so well I shall have to read them all.’ The Times
‘Intriguing, masterly’ John Lawton bestselling author
‘Outstanding historical mystery’ New York Times bestseller Joe Finder
‘A potent mix of crime mystery and wartime thriller…excellent’ Alex Gerlis bestselling spy fiction writer
‘Pitch perfect’ Aspects of Crime Magazine
‘Miraculous’ Shots Magazine

Mark Ellis has also written Boom Time, a history of true crime in WW2 London