Part 4/8:
On the day of the service, Lucy's parents exhibit their own grief, having never truly moved on from Summer's death; they even conceived Lucy as a way to cope with their loss. In a moment of curiosity, while at a memorial site for Summer, Lucy finds a time machine in a nearby shed that transports her back to the fateful day of her sister's murder. She suddenly realizes she has traveled back to April 16, 2003, where she spots her sister and her late friends, unbeknownst to her that they were already victims of a sinister fate.