The tribe faces an unexpected return; Eli's plan for the future forces Pete into a life-or-death decision about his loyalties.

Sarah is deeply wounded and struggling to stay alive on the Island. Driven deep into its forest by Neolutionists and worse, she strives to make it far enough to rescue Cosima. Meanwhile, a recovering Cosima reunites with Delphine, but there's way more going on this Island than Cosima imagined and Delphine can't give her all the answers she needs. What is clear is that Rachel is now in firmly in charge at the right-hand of the 170-year-old founder of Neolution, PT Westmorland. Back home, Neolution puts the screws to Alison and Donnie in their hunt for Helena. The sestras couldn't be further apart when they need most to be together.

Maria convenes a special assembly in the chapel as the inmates plot their next move. Frieda makes use of the survival skills she learned as a kid.

Frank attempts to stop Cathy from testifying. With Hammerschmidt sniffing out the truth, the Underwoods throw someone close to them under the bus.

Contestants have an hour to create a delicious dish from ingredients found in the Mystery Box set by international celebrity chef Curtis Stone.

The year is 1794, and Ross Poldark throws himself into the business of repairing Nampara, and rebuilding his relationship with Demelza. However, Elizabeth's pregnancy continues to cast a shadow over the pair's marriage. Young Geoffrey Charles is placed in the care of a new governess, and he and Poldark bond over their shared hatred of George. Meanwhile, Demelza visits her dying father at the behest of her brothers, who have taken up Methodism, and Elizabeth places both her own life and that of her unborn child in danger when she tries to hide the fact that she has gone into labour early.

Beneath the waters of Loch Ness, we see the pigment bleached body of an unidentified middle-aged man, curling stones tied to his ankles.

When Bob finds out that the nearby wildness equipment store is having a going out of business sale, he decides to finally realize his dream of becoming an outdoorsman. In true Bob fashion, he encounters a snafu that leaves him stuck in the store overnight to fend for himself. Meanwhile, Linda and the kids spend the night watching the rehearsal for Aunt Gayle's one-woman show.