Salem sees a second passing since Increase's arrival in town, and Mary struggles to get George back under her control. Mercy and her acolytes flex their growing power while Increase grows closer with Isaac, putting Isaac's loyalty to Mary in question.
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.