Reason: He was writing something in his diary, so he could have used markers to write and then left them in the pool and hallway. He then could have went to the attic and pulled the lever.
1. Welp, we know who dying next episode!
2. Finally, after 3 episodes someone got the killer right! Ironicallly, though, it was a person who already died.
Just this once, I'll allow you to rejoin the game TheUniqueGreen. But as a ghost. You can still participate, but I can't think of any actual way to kill you again, you can't win the game. But, you can split the prise money 25/75 with the actual winner of the whodunnit.
Yin-Yang (me), Jade, Shadow, and Periwinkle's answer:
Killer: Smile
Why: Because he has spike wounds in his body, but he's not dead.
Dk Olive, Cobalt Blue, and Smile's answer:
Killer: Lavender
Reason: She set up the trap when nobody was watching her and she wrote the note to throw people off track.