Death in Flames — John Creasey

A thrilling World War IIâ€"era mystery featuring famous British detective Patrick Dawlish from the Edgar Awardâ€"winning author of Death in High Places.
 
Captain Patrick Dawlish, an intelligence officer in His Majesty's Army, may not officially be a policeman, but his reputation for solving crimes has spread far and wide, which is why a young French woman seeks him out. Yvonne Lejeune escaped Occupied France, made her way to England, and claims she is being followed and blackmailed by strange men.
 
Yvonne is not the only person trying to draw Dawlish into investigating the case. Three separate visitors have recently appealed to his fiancée for his help, all leaving the same address -- a hotel that is soon engulfed in flames.
 
Clues lead Dawlish and his friends Ted Beresford and Tim Jeremy to a group of disgruntled government employees who were sacked for believing that Nazi spies invaded the Home Office. Frustratingly, Dawlish finds himself constantly one step behind as the case explodes into a conflagration that could destroy Britain from the inside out . . .