Grey WolvesBook - 2011
Spring, 1941. German submarines are prowling the North Atlantic, sinking ships filled with the food, fuel and weapons that Britain needs to survive. Six young agents must sneak into Nazi-occupied Europe and sabotage a submarine base on France's western coast.
Publisher: London : Hodder Children's Books, 2011
Characteristics: 452 p. : ill., map ; 20 cm