Is Detective Conan episode 20 filler?
Canon No, episode 20 of Detective Conan is canon.
#20
A Haunted Mansion Murder Case
幽霊屋敷殺人事件
Aired 17 Jun 1996
Canon No, episode 20 of Detective Conan is canon.
#20
A Haunted Mansion Murder Case
幽霊屋敷殺人事件
Aired 17 Jun 1996