Mr David Downey Louis is not the killer.
Angela Carter is.
Right from the beginning, David knew that both Veronica and Derek were clear. So, that left him with just two choices, his precious little daughters.
Since time immemorial, David had always kept track of his daughters, no matter which part of the world he was in. After the murders, however, the situation got a little intense. Despite his untiring efforts, he couldn't decipher who out of his two daughters was the killer. Asking them out straight wouldn't be a big deal. But, that would hurt the innocent out of the two and make her feel insecure. Hence, he resorted to choose a tougher method.
Once when he happened to cross by Rachel's room, he heard them discuss something. It didn't quite attract his attention until he heard the w
