Unanswered questions, plot holes, **SPOILER WARNING**
Sarah was reading Jillian's diary and that's the last we see or hear of it. I thought it had to be important since Sarah took such a risk to get it.
Sarah's car not starting at the Tod farm, then it started fine the next day and Jasper said there was nothing wrong with it. I wondered if Tod had tampered with it, perhaps thinking that Sarah would be forced to stay overnight? Darla seemed really freaked that the car wouldn't start, calling to her father even though Sarah said she could call Jasper.
What kind of mother would leave a 17 year old girl on her own for days at a time? Sarah could have been put into foster care if anyone had reported it. She was alone in a house with no security system. The mother didn't call to check on her. She didn't realize something was really wrong when Sarah ran sobbing into her arms after the cop grabbed her.
What did Tod whisper into Sarah's ear at the end? The way he had killed Jillian? He did add that Sarah's name was the last thing Jillian had said. He also said the bodies would never be found. Sarah and Jasper had a lot of explaining to do to the cops. Since Jillian had never been reported missing, I wondered if anyone would believe them. Where were all these cops when Sarah tried to get a search for Jillian started? When the crooked cop brushed her off, why didn't she go to his superior? Why didn't she report all this to Jillian's mother so she could file a missing persons report?
The ending was way too abrupt. There should have been some kind of closure. What happened to Darla?
The store where the three girls worked never seemed to have many customers. How could the owner afford to hire all three of them?