Factual error: When she's giving the historical tour, Sarah talks about how the Puritans who settled in Point Pleasant faced hardships during their first winter there. But the first village at Point Pleasant was built in 1817, a century and a half after Puritans ceased to exist as a distinct group.
Plot hole: In episode 1-7: "Unraveling," Christina and Jesse get on a bus to New Haven, first thing in the morning. Christina left the Kramers's house before breakfast. Then, they ride on the bus all day until getting trapped in a terrible storm in the dark of night. But New Haven, CT, is less than a seven hour bus ride from the Jersey shore, so anything that happened to them on the way there should have been in full daylight.