Detective Conan › Season 1

S1 E155: The Key in the Water Locked Room Case

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?

Air date	Aug 2, 1999
Runtime	25 minutes
TMDB rating	★ 9.0/10