While ice skating at a public rink, Serena discovers a woman in the restroom shotgunned to death.; Using Richard as his surrogate, Conan implicates the murderer.; Richard and Harley are hired separately to investigate a mysterious house where a recent suicide resembles an incident three years prior and where more deaths are threatened.; Using Richard as his surrogate, Conan implicates the murderer.; While on a camping trip, Conan and the Junior Detective League find a rock inscribed with a message promising treasure in the cave it marks. But when they explore the cave, they run across a group of hiding outlaws determined to keep their secrets at all costs.; The Junior Detective League must find their way out of the cave carrying a wounded Conan before the outlaws track them down and kill them.; The Junior Detective League manage to outwit the outlaws long enough to be rescued. Later in the hospital, Conan begins to suspect that Rachel knows his real identity.; While the police and Richard struggle to solve the case, Conan works independently and arrives at the solution.; A second hanging causes the grandmother of the clan to claim that the legendary Spider Woman of the area is murdering people in the house. Harley and Conan, though, see a different set of circumstances.; The killer strikes again and Kazuha is the next victim.; With Kazuha rescued and more evidence piling up, Conan and Harley begin to close in on the killer.