Riley Flynn keert naar huis terug, een disfunctioneel gezin, bekende gezichten en een nieuwe priester in St. Patrick's. Elders op het eiland woedt een donkere storm.

Miraculous times leave residents stunned as Leeza pays Joe an important visit. A shocking confession reveals what really happened to Monsignor Pruitt.

Erin turns to Riley after receiving upsetting news. Father Paul starts experiencing disturbing side effects. Bev makes a startling discovery.

Sheriff Shabazz fields multiple missing persons reports as the town prepares to gather for Good Friday. To protect Erin, Riley brings the truth to light.

A fervent Bev calls for faith on the night of Easter vigil. Sarah reveals the results of a troubling experiment — along with a sobering hypothesis.

Night falls on Crockett Island as a tight-knit group of rebels take refuge where they can and forge a plan to control the chaos.