Watcher in the shadows by Geoffrey Household - bantam books

Watcher in the shadows by Geoffrey Household - bantam books Plot: The story follows Charles Dennim, a former British double agent during World War II who is now living a quiet life as a zoologist in rural England. His peace is shattered when a letter bomb arrives at his home, forcing him to confront a dangerous past he thought he had escaped. Dennim must rely on his old espionage skills to survive a deadly game of cat and mouse against a nameless killer driven by revenge for events in a Nazi concentration camp, where Dennim was secretly working to free prisoners Pet friendly home. Bundle and save!