The anonymous letters arrive in the mail, one by one: To find out what really happened to Meg, meet at this location. Don't tell anyone you're coming. In one night, you'll find out everything you need to know.

Ten years after her murder, the letters tell Meghan's family exactly when and where to meet: a cliffside home on the Oregon coast. But on the night they're promised answers, the convicted killer--her high school boyfriend, Cal, who spent only ten years in prison for murder--is found unconscious in his car after it slammed into a tree near the house where the family is sitting and waiting. Is he really the one who invited them to gather?

As a storm rampages along the Pacific Northwest, the power cuts off and leaves the family with no chance of returning to the main road and finding help. So they drag Cal back to the house for the remainder of the night. How easy it would be to let him die and claim it was an accident. Or do they help him instead? As the hours tick by, it becomes an excruciating choice. Half of the family wants to kill him. The other half wants him to regain consciousness so he can tell them what he knows.

But if Cal wakes up, he might reveal that someone in the family knows more than they're letting on. And if that's the case, who is the real killer? And are they already in the house?