The expanded third season picks up six months after the events of season two and follows Lt. Joe Leaphorn and Jim Chee as they investigate the disappearance of two boys, with only an abandoned bicycle and blood-stained patch of ground left in their wake.
A baby in a basket is left on the steps of an isolated monastery on a Scottish island. The nuns take it in, planning to care for it until a storm passes. Soon though, strange and unexplained events begin to happen at the convent.