Blood Oath is a novel written by William W. Johnstone. It was first published in 1999.
Description[]
In 1973, thirteen kids with an appetite for something different went out to play. First came the ritual and the dare...then the screaming and the blood. Before the night was over, only eleven children survived to share a terrible secret.
Twenty-six years later, the small town of Denton, Missouri has been rocked by three brutal murders -- each victim bound by a childhood friendship stained with blood. Far from the shadow of suspicion, far from the memories of an unforgivable crime, the past has returned with a vengeance. And this time, the fun and games are just beginning.