User blog comment:AltertheSilverBird/Total Drama: Danganronpa Chapter 9: Class Trial/@comment-32158416-20161023022200

This is my theory:

One of the killers can't fit through the chimney so they decided to use oil to slide through the chimney so it's either Owen or Rodney who killed

I also suspect that the killer swapped the bodies and their respective wound

The grease stain on the wall is from the oil

The fake body is a dummy of Leshawna

and Leshawna was probably contacting someone through the walkie-talkie