Detective Conan

S01E39425 min· aired 4/18/2005
Big Adventure in the Eccentric Mansion: The Seal
TMDb8.0
Nexus es90874TMDb ep 1490119
Overview
Agasa, Haibara, Conan, Ayumi, Mitsuhiko, and Genta go camping. While they're camping they find a lantern in a pond with some writing inside. They show the stone lantern to Conan who determines that it is a code to finding a large diamond. The lantern is also hiding another secret...a dead body at the bottom of the pond.