Dorothy Martin wanted to have a traditional Thanksgiving dinner for her husband, Alan and some of her friends – a real taste of home. Then came the call from the school, asking Dorothy to fill in because teacher Amanda Doyle hadn't shown up. Three days later, on Thanksgiving, the second call came: John Doyle had been murdered and Amanda was the suspect. Would Dorothy mind caring for their daughter Miriam for the day?

Dorothy had already sensed that something was not right in the Doyle household: John was clearly emotionally abusive, and the church they belonged to held some very strange ideas about sin and punishment. Now Amanda and Miriam need her to prove Amanda's innocence, and Dorothy unravels a nasty knot of family secrets.