When two mysterious strangers come to the Brandts’ house, asking about their Uncle Theo, Ricky, Megan, and Freddy suspect it means they are about to get involved in another adventure. What they don’t expect is for Ricky and Uncle Theo to be kidnapped in a desperate attempt to solve a riddle written into the side of a railroad tunnel. The riddle reportedly leads to a tablet which contains directions to a legendary and priceless treasure, but simply recovering the tablet is going to be an adventure all in itself.
Riddle of the Railroad Tunnel is the third book in the exciting Brandt Expeditions.