Mission for the Cobra Gang! Can you and your three friends solve the puzzles in the book and put a stop to the gangsters? Bea (12) and her brother Otto (10) are spending their summer vacation in Berlin with their grandfather. When Bea's phone is stolen at the swimming pool, they meet Cem, who witnessed the theft. Together, they set out to catch the thief, but he proves to be quite elusive. When they finally track him down, it turns out he is involved in a much bigger case and urgently needs the help of the three friends. Together, the children (and the readers) must solve several puzzles to expose the gang behind the shady phone dealings. Always by their side is their animal friend – a raven named Rabbit. An exciting puzzle novel for children aged 8 and up, featuring puzzles to solve within the book. Perfect reading material for all puzzle fans.