In at the Kill — Alexander Fullerton

She operates in the enemy's midst -- but the true danger is from one of her own . . . A pulse-pounding WWII thriller by an author whose “action passages are superb” (The Observer).
 
At the London headquarters of ‘F' Section SOE -- Special Operations Executive -- they're sure Rosie Ewing is dead, shot by the Gestapo while running from a train taking her to Ravensbrück concentration camp.
 
But they shouldn't be so sure.

Left for dead, Rosie has been nursed back to health at a farmhouse in Alsace. Now she has a score to settle, and an SOE traitor to track down. It's not just necessary, it's personal -- because she's one of the agents he betrayed . . .

Praise for the Rosie Ewing Spy Thrillers:
 
“Enthralling . . . A gripping read.” -- Historical Novels Review
 
“The most meticulously researched war novels I've ever read.” -- Len Deighton