Thanks! Sure, I chose the murderer to be blackmailing someone else there were also some hints with the weapon and costume at the Halloween party. You can get pretty much all the explainations with the good dialogue options.
I think the whole thing would have made more sense if I had the time to polish a bit more the dialogues and added an introduction scene with the actual murder.
Sadly as it was a gamejam I couldn't add those elements. I'm curious though as to what your reasoning was :)