"1940. Britain is at war with Nazi Germany. Eleven-year-old Eric practically lives at the London Zoo. And there's one animal in particular he loves to spend time with: Gertrude the gorilla. But with German bombs raining over London, Eric realizes Gertrude is in terrible danger, and together with his Uncle Sid, a keeper at the zoo, the three go on the run. But while hiding out at the seaside, they uncover a top-secret Nazi plot..."--Page [2] of cover....