This is all accurate, but there are quite a few plot holes.
- How would the police not have realized that the witness was the killer’s brother?
- The newspaper article talks about Victoria lying on the ground, and the switchblade being found on the ground. Not on the floor. So, the newspaper story has the murder/suicide taking place outside, not in a house. So, apparently, Edward moved both the bodies, while arranging the outside scene well enough that the police wouldn’t know, but, then, there’s the older man at the house that told Nicholas the murder happened there… how did he know? If he was the hypnotherapist/Edward, Nicholas would have recognized him.
- Minimum age for a senator is 30, so Edward would have had to be at least 101 in 1999. Not impossible, but unlikely to be threatening to a much younger Nicholas.
- Where were Nicholas’ wife and son when he got home?
Edit: after some discussions elsewhere, and reviewing the lyrics again, 2 is just the old man being wrong. The murder occurred “in a pathway out of view”, not at the house. We don’t even know whose house it is, though… Victoria’s? Julian’s?
Consensus for 3 is that the hypnotist is not Edward at 101+ years old. But I don’t think there is any evidence that he is reincarnated Edward either… though a lot of people think he is.
1 is still a definite plot hole, or, at the least, pretty strong evidence that the police helped cover up the murders. Adding to that is that Edward has to go somewhere else to clean up and write the note and then go back and put the note in Julian’s pocket before he “ran for assistance.” The pathway out of view must have been pretty far from everything for four gunshots to go unnoticed on a Friday evening.