The Three Investigators [085]: The Trail of the Last Manuscript

Who’s Johnny? And why did he disappear? The three detectives from Rocky Beach are faced with an almost unsolvable task. They are to find an unknown man and hand him a letter that leads to an unknown treasure. The anonymous message lures The Three Investigators into the wilderness of Kings Canyon National Park and to a mysterious Black Tower. Suddenly the situation becomes dangerous—Jupiter, Pete and Bob are ambushed. Someone is trying to stop their mission. Will the three detectives be able to help Johnny?