Case Closed - Season 1 - White Day of Betrayal (2) (Episode 609)
Plot: Conan investigates and upon discovering the method, tranquilizers Kogoro and explains how Hoshie committed the murder. He explains the burn marks on Hoshie's napkin indicate cyanide was on the napkin and the poison was placed on a lemon slice
Episode Aired On:
Saturday, March 19 2011 14 years ago