The Ties that Bind

A misunderstanding on Shinichi's birthday leads to a rift between Conan and Heiji. When the latter goes off on his own on Shinichi's behalf, he finds himself the victim of an updated and highly unstable APTX pill just as Conan gets his hands on a temporary cure. With Heiji's life on the line, time is of the essence. But when Ran is kidnapped, Shinichi is left with a hard choice.