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.

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.

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.

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

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

An unsettling omen washes ashore in the wake of the storm. Later, when the locals gather for a potluck, tragedy strikes — and a miracle occurs.

Riley Flynn returns home to family dysfunction, familiar faces and a new priest at St. Patrick's. Elsewhere on the island, a dark storm is brewing.