Helen and Phillip's baby is born, and they subsequently hold a welcoming home party. During the party, Phillip goes to look for some firecrackers, and finds a piece of Lesley's jewellery in the garage. Phillip realises that Sharon is not the killer, and that Helen in fact murdered Lesley after witnessing them having sex on the night of the school reunion.
After their baby is born, Helen and Phillip throw a party to celebrate. Phillip goes looking for fireworks but finds Lesley's jewelry in the garage. This leads him to realize that Helen killed Lesley, not Sharon, as he witnessed her having sex with Lesley on the night of the school reunion.