Tom leads the search for Rachael, as her situation becomes increasingly dire; Maggie and Dr. Ward make a series of unexpected discoveries.

The return of the dead reaches critical mass, sending the town into chaos; Sheriff Fred implements his own agenda, triggering an unexpected siege.

When deceased loved ones begin to reappear, the people in Arcadia change forever.

Bellamy and Sheriff Fred try to find Caleb; Maggie gives Jacob a checkup; Pastor Tom's old love returns.

Bellamy tries to keep Jacob safe but his past interferes; Elaine must find where Caleb hid the money; Rachael gets shocking news.

Exhuming Jacob's grave deepens the mystery of his return; Henry struggles to accept that Jacob is really the son he lost; Maggie and Bellamy wonder if the local river holds a clue that could connect Caleb's and Jacob's deaths.

Bellamy wants to have Jacob's tomb exhumed; Pastor Tom reaches out to a childhood friend; Caleb claims he can't remember his death.

Maggie turns to a person from the past for answers about the mystery; Rachael's secret ends up in the wrong hands; Bellamy and Pastor Tom try to reassure residents.