Then There Were Nun (Sister Mary's Bad Habit Adventures)

Sister Mary joins nine other nuns for a relaxing retreat of prayer and meditation at a remote convent in the northern Italian Alps. The retreat goes horribly wrong when the sisters are accused of heinous crimes and one dies under mysterious circumstances. Sister Mary suspects the death may be the work of a serial killer. In a race to save the other nuns Sister Mary must investigate a string of clues leading to the killer’s identity.