Tensions boil over as the final three couples battle in "The Mega Duel" for the $100K prize.

The semifinalists face "Tired Out"; a surprise return makes waves before the finalists are revealed.

Iain Stirling shares hilarious chats and pranks from another rollercoaster week in Fiji.

The Islanders attend a carnival, but the fun turns into war as rivalries come to light.

A recoupling shakes up the villa and leaves two girls single and dumped from the Island.

Six new All-Stars make an explosive entrance; two vulnerable couples must fight in "The Duel."

Two Islanders get dumped; Maura Higgins and Kem Cetinay host "She's a Catch" with a shocking twist.

In the "Gone in a Heartbeat" challenge, couples who fail to get pulses racing are left vulnerable.

Three new All-Stars shake up the villa during "Spin the Bottle"; a recoupling breaks alliances.

Exclusive action from the international All-Star Islanders, including unseen flirty fun and games.

Two vulnerable couples battle it out in "The Duel"; the losing couple is dumped from the Island.

Maura Higgins hosts a game of "Knowing Me, Knowing You," leading to a shocking confession.

Two UK bombshells arrive and one couple gets dumped; a game of "Smooch, Marry, Pie" turns wild.

Ariana Madix hosts a game of "Madix Mountain"; the losing couples risk being dumped from the Island.

Ariana Madix from "Vanderpump Rules" crashes the villa for the first recoupling of the season.

The winners of "Most Wanted" are crowned as a Power Couple; the first Islander is dumped.

A steamy game of dare reveals some surprising new alliances between the international Islanders.

Two All-Star bombshells challenge two Islanders to "The Duel" in order to get coupled up.

The All-Star Islanders enter the villa and play a game to couple up, but with a shocking twist.