When Phil gives Frankie a new bow after the attack, at first, it makes sense that a family friend would bring a present to someone who’s almost been killed. Then we learn that Phil’s the killer, and suddenly, we realize he’s not acting out of sympathy, but guilt.
The cloakroom scene where Melissa’s ghost is being attacked is frightening enough to a child. It’s even worse to an adult, particularly after it is revealed that the killer molested his victims. That’s when you realize you’re watching a ten-year-old girl being raped.
The archery scene between Phil and Frankie is far more disturbing to an adult viewer who is aware that Phil is a pedophile.
In the cloakroom, Melissa identifies "Did You Ever See a Dream Walking?" as the killer’s favorite song, which he sings all the time. Only, despite the fact that Phil is well known to Frankie and his family, being an Honorary Uncle, Frankie only figures out that Phil is the killer upon hearing him whistle it, presumably for the first time, several months later. Consider that the song is about a man’s desire for a woman. Thus, Phil only sings it when he’s lusting after a child. Thus, his singing it around Melissa and his whistling it after the archery scene take on a disturbing significance.
After Frankie’s attack, Geno tells him about an earlier victim, who had been in Geno’s grade. Given who the killer is, it’s obvious that, at the time, he’d been lusting after Geno and, unwilling to attack Angelo’s son, transferred his lusts to Geno’s classmate. What’s more, had he not been discovered in time, his lust for Frankie would have driven him to attack one of Frankie’s classmates.
If you look closely at the circumstances leading up to Willy’s arrest, you realize what racist idiots the police were to blame him. Everything we see about the actual killer shows that he’s smart, yet how do the police come upon Willy? They find him passed out drunk in the boiler room, which would be an incredibly stupid thing for a Serial Killer to do after he’s just attacked a child.
We have Melissa, her mother Anne, and her aunt Amanda, but there’s no mention of her father. Then, if you look at her date of birth, she was born during World War II, and it becomes obvious what probably happened to him.
