The Wicker Tree (2011)

Beth is a successful pop singer and a devout evangelical Christian from Texas, United States. She and her fiance Steve both wear purity rings, and belong to a group known as the "Cowboys for Christ", who travel to "heathen areas" of the world to preach Christianity. The Reverend Moriarty (James Mapes) sends them off to travel to Glasgow, Scotland, hoping to save some souls once there. However, they are shocked when they receive a very negative reception, Beth even being set upon by a large dog.


After performing a concert at a local cathedral, the duo are approached by Sir Lachlan Morrison and his wife Delia, the laird of the small village of Tressock in the Scottish lowlands. They invite Beth and Steve to come back with them to preach, but intend them for a more central part in Tressock's May Day celebration.


Meanwhile, detective Orlando is sent to Tressock, posing as the local police officer, in order to secretly investigate reports of a pagan cult. Orlando discovers that the people of the village worship the ancient Celt goddess Sulis.


Beth and Steve decide to begin their preaching at the May Day celebrations in the village. In an attempt to impress the locals, they agree to becoming the local Queen of the May and the Laddie for the festival not realising the consequences of their decision and not knowing what awaits them. At the end, both of them are killed in the ritual.