About the book: year / Alfred Hitchcock is a famous American film director, famous for his detective films. And the three detectives are his young friends Bob Andrews, Pete Crenshaw and Jupiter Jones. They live in a town near Hollywood. Their stronghold is a salvage warehouse, their headquarters is an old caravan in which they have equipped a crime laboratory. Their agency "Three Detectives" reveals any secrets, riddles and puzzles. Friends-detectives boldly take on the most important and complicated cases and bring them to the end with honor. An exciting plot, dangerous and exciting adventures will undoubtedly not leave readers indifferent. While relaxing on a ranch with friends of the Yupa family, the guys encounter strange moans coming from a nearby cave. Is it the moaning ghost of the elusive robber nicknamed the Devil or is it just the wind walking through the underground labyrinths? The book contains illustrations.