"How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth? "
Originally, up the penultimate chapter, I was thinking the actor of Kaede was the serial killer even when the suspicion of Heiji's actor was overwhelming. It was either him or her because the actor of Mouri didn't have much screen time, being stuck in the bathroom. However by the 4th part of the case, even I had to admit it was the actor of Heiji who's behind the crimes but I didn't expect the first death to be an accident. I can see why the actor of Kaede was in distress throughout the entire case.
Ah for the case, I like the theme, but the murderer had an insane amount of luck that his sleeping trick wasn't exposed, or nobody noticed him tamper with the bodies.
With that said, I'm glad Heiji finally, finally managed to confess his feelings to Kazuha! Heiji's my favorite character in the manga and I hate how many times he got screwed over trying to confess while the main couple (Shinichi and Ran) is lightyears ahead of them. Now that both couples are together, the possibility of a double-date murder case setting might actually come!