Part 220: (Hint 12)

"George. Jessica, who has been confirmed innocent, used the purple text to say that it was impossible for George to kill Shannon. So, doesn't that mean either Battler or Maria must have killed her?"
"I'd like to think that, but it's too soon to be sure. Battler, Maria, and every other person except George lacks an alibi. I've managed to prove the crime wasn't committed by a single person, but I didn't prove that there were exactly two culprits. At this point in time, it's still too soon to be sure."
"I see. There might be the culprit of the first and second twilights, the culprit who lied about the first culprit's death, and another completely separate culprit as well. Yes, it was a mistake to overlook that..."
"The murder of Shannon-chan was possible for anyone, with only one single exception. Also, that fact alone isn't enough to prove that George-aniki is innocent."
"...I thought this would be an easy one since there's no closed room, but on the contrary, we have no suspicious circumstances and no information to lead us to the culprit..."
"The pace of the crimes picks up starting here. Instead of getting stuck on this one part, we should take a look at the fifth twilight too."