Twenty years ago, 11-year-olds Charlie Paige and Scott Ashby were murdered in the city of Bristol. A man was convicted of the brutal crime, but decades later, questions still linger. For his whole life, filmmaker Cody Swift has been haunted by the deaths of his childhood best friends. The loose ends of the police investigation consume him so much that he decides to return to Bristol in search of answers. Hoping to uncover new evidence and to encourage those who may be keeping long-buried secrets to speak up, Cody starts a podcast to record his findings.

Dr. Kate English has it all. Not only is she the heiress to a large fortune; she has a gorgeous husband and daughter, a high-flying career, and a beautiful home anyone would envy. But all that changes the night Kate’s mother, Lily, is found dead, brutally murdered in her own home. Heartbroken and distraught, Kate reaches out to her estranged best friend, Blaire Barrington, who rushes to her side for the funeral, where the years of distance between them are forgotten in a moment. That evening, Kate’s grief turns to horror when she receives an anonymous text.

Charlotte has an unsavory past, but she’s on the straight and narrow these days. She was so young then—she married the wrong man, falling for Sam’s sweet-talking charm and charisma, and got caught up in his con artist games. Now Sam is missing. But before he disappeared, he left urgent, cryptic messages about someone threatening him—someone who has been threatening Charlotte, too. So Charlotte takes a job as a personal assistant for an engagement party aboard a private luxury cruise ship, the Cleobella, to get far away from anyone who means her harm.

Perched atop a hill in the tiny town of Marchburg, Virginia, The Goode School is a prestigious prep school known as a Silent Ivy. The boarding school of choice for daughters of the rich and influential, it accepts only the best and the brightest. Its elite status, long-held traditions and honor code are ideal for preparing exceptional young women for brilliant futures at Ivy League universities and beyond. But a stranger has come to Goode, and this ivy has turned poisonous.

It's winter in the Catskills and Mitchell's Inn, nestled deep in the woods, is the perfect setting for a relaxing—maybe even romantic—weekend away. So when the weather takes a turn for the worse, and a blizzard cuts off the electricity—and all contact with the outside world—the guests settle in and try to make the best of it. Soon, though, one of the guests turns up dead—it looks like an accident. But when a second guest dies, they start to panic. Within the snowed-in paradise, something—or someone—is picking off the guests one by one.