Return to the Field — Alexander Fullerton

In this stunning adventure set in war-torn France -- a British agent finds herself in Nazi territory -- and unsure about who to trust . . .
 
It's the spring of 1944 and Rosie Ewing is returning to German-occupied France, by air, this time.
 
She's carrying a radio, half a million francs, a pistol, and two cyanide capsules to Finistere in north-west Brittany.

With D-Day looming, Rosie fears that the man who'll be meeting her on the ground tonight may be a traitor. She can't be certain. But she does know that the likely end of the road for captured female agents is Ravensbrück, or l'enfer des femmes, as the Resistance calls it -- the dreaded concentration camp for women . . .

Praise for the Rosie Ewing Spy Thrillers:
 
“The most meticulously researched war novels I've ever read.” -- Len Deighton
 
“His action passages are superb.” -- The Observer