It all begins on an ordinary fall morning, when Kelly Medina gets a call from her son’s pediatrician to confirm her upcoming "well-baby" appointment. It’s a cruel mistake; her son left for college a year ago, and Kelly’s never felt so alone. The receptionist quickly apologizes: There’s another mother in town named Kelly Medina, and she must have gotten their numbers switched. For days, Kelly can’t stop thinking about the woman who shares her name. Lives in her same town. Has a son she can still hold, and her whole life ahead of her. She can’t help looking for her.

Jake Hayes is missing. This much is certain. At first, his wife, Nina, thinks he is blowing off steam at a friend’s house after their heated fight the night before. But then a day goes by. Two days. Five. And Jake is still nowhere to be found. Lily Scott, Nina’s friend and coworker, thinks she may have been the last to see Jake before he went missing. After Lily confesses everything to her husband, Christian, the two decide that nobody can find out what happened leading up to Jake’s disappearance, especially not Nina.

Valerie has been forgetting things. Her daughter worries about her being on her own in her big Victorian house—one rumored to be haunted after a tragedy decades earlier—and truth be told, she is a little lonely. With few options, she asks her adult son to move home, but it’s not quite the reunion she hoped for. Hudson is taciturn, moody, and frequently gone. The neighbors already hold a grudge against Hudson, and they aren’t happy about his return. When a young woman is found murdered a block away, suspicion falls on him immediately, without a shred of evidence. 

On a humid summer day in Alabama, a mayor’s wife turns up brutally murdered under a railroad bridge. Standing next to her body is fourteen-year-old Mason Hill, the autistic son of former Miss USA Genevieve Hill. The locals are quick to level their verdict on young Mason: he did it. The town detective calls in local autism expert Casey Walker to consult on the case. At first, Casey tries to keep an open mind. But the more time she spends with Genevieve, the more her unease grows, and she suspects that Genevieve is doing more than just protecting her son.

A night spent sleeping on dirt and leaves is not how Claire Matchett expected to spend her vacation. She thought this would be a break. A week of hiking and hot tubs with two other couple friends. Then Claire’s minivan breaks down on a lonely dirt road. With no cell reception, the group has no choice but to hike the rest of the way to their hotel. But it turns out the woods aren’t as easy to navigate as they thought. Hours later, they are lost. Hopelessly lost. And as they navigate deeper into the woods, the members of their party are struck down mysteriously one by one.