What Happened at Midnight

In "What Happened at Midnight," Frank and Joe Hardy put their skills to the test when tasked with retrieving a secret invention from their neighbor's house. But their mission becomes much more complex when they uncover a dangerous gang of jewel thieves and smugglers. The young detectives find themselves in a race against time to solve the case and rescue Joe from being kidnapped. This thrilling mystery will keep readers on the edge of their seats until the very end.