Lex Gracie doesn't want to think about her family. She doesn't want to think about growing up in her parents' House of Horrors. And she doesn't want to think about her identity as Girl A: the girl who escaped, the eldest sister who freed her older brother and four younger siblings. It's been easy enough to avoid her parents - her father never made it out of the House of Horrors he created, and her mother spent the rest of her life behind bars. But when her mother dies in prison and leaves Lex and her siblings the family home, she can't run from her past any longer.

In a quest for a simpler life, Helen and Nate have abandoned the comforts of suburbia to take up residence on 44 acres of rural land where they will begin the ultimate, aspirational do-it-yourself project: building the house of their dreams. When they discover that this beautiful property has a dark and violent past, Helen, a former history teacher, becomes consumed by the local legend of Hattie Breckenridge, a woman who lived and died there a century ago.

New friends Sam, Margaret and Diana are thrilled to be getting out of the city for a girls’ weekend - they’ve bonded over their messy divorces, and every mile on the odometer feels like another step towards putting their exes in the past. But when car trouble halfway into their trip strands them in the most unlikely of mountain towns, they come face-to-face with the hurts and betrayals they were so desperate to leave behind. When Diana doesn't return home after a night out, Sam and Margaret's search for her reveals just how little they know about their friend.

Julie is missing, and no one believes she will ever return - except Elise. Elise knows Julie better than anyone, and feels it in her bones that her best friend is out there and that one day Julie will come back. She’s right. Two years to the day that Julie went missing, she reappears with no memory of where she’s been or what happened to her. Along with Molly and Mae, their two close friends from college, the women decide to reunite at a remote inn. But the second Elise sees Julie, she knows something is wrong - she’s emaciated, with sallow skin and odd appetites.

Mina is trying to focus on her job as a flight attendant, not the problems of her five-year-old daughter back home or the fissures in her marriage. But the plane has barely taken off when Mina receives a chilling note from an anonymous passenger, someone intent on ensuring the plane never reaches its destination. Someone who needs Mina's assistance and who knows exactly how to make her comply. It's 20 hours to landing. A lot can happen in 20 hours....