Detective Conan S1E155 · The Key in the Water Locked Room Case

Detective Conan

Season 1 · Episode 155 · The Key in the Water Locked Room Case · 25 min

Kogoro, Ran, and Conan pay a visit to an old woman. She decides to take them to her grandson, but he's found dead when they get into the house. The bathroom door is locked however. How could this have happened?