Mahone takes a sudden interest in the case of D.B. Cooper and receives a special delivery; Michael and Lincoln search for the Double K Ranch; Sucre races to Las Vegas to stop Maricruz's wedding.
After the murder of their mother, conjoined twins Bette and Dot are hired by freak show owner Elsa, who hopes the girls will save her struggling troupe.
Zoe, Queenie and Nan contact a dark spirit trapped in the academy, while Cordelia's new power brings on a heartbreaking revelation.
Unexpected sacrifices must be made; the fight against evil puts loyalties to the test.
Mary finds herself in disagreement with her coven. Alden and Cotton uncover a dangerous witches' relic.