Alden's trial begins, triggering a chain of events that breaks nearly every remaining allegiance left in Salem. While Mary arms the Malum for the Grand Rite, the coven elders urge her to use Alden as the final sacrifice. Increase seizes Mercy's acolytes for information to use against Alden - an act that carries more consequences than anyone anticipated.
Set in the volatile world of 17th century Massachusetts, it explores what really fueled the town's infamous witch trials and centers on Mary Sibley, the beautiful, ruthless but vulnerable wife of an ancient, ailing but very wealthy Salem town Selectman.