When a secret hookup is exposed, two romances are shattered and the entire house is turned upside down. Tony struggles with making a huge game decision.

Challenge legends continue to wreak havoc on the game. One player uses the power of the grenade to threaten the competition, creating a powerful vendetta in the process.

One player's humiliating performance may cost her the game when she gets shamefully stuck in a basket; Devin vows to wage war against his enemy, Bananas.

When one of the players falls ill, their true strength in the game is tested. Kayleigh is fed up with her vendetta Melissa, whose antics culminate in an explosive fight that rocks the Challenge house.

When the mysterious and offensive notes continue to circulate the Challenge house, they cause a stir among the female competitors and the culprit finally gets revealed; when four Challenge legends return, the game turns upside-down.

A player is left stunned by a shocking betrayal. Two scorned lovers form a bond, but their friendship is quickly tested by a dirty game move.

A mysterious player leaves mean notes in the girls’ room, causing havoc with their game as they all try to figure out the culprit. The bromance between Victor and Shane fractures into a newfound vendetta.

With the finale rapidly approaching, TJ stuns the competitors with news of a location change; they must first endure a grueling time trial to move forward.

When one player is blindsided, a surprising new vendetta is formed; players compete in the high octane challenge, "Outside the Box" which will determine who is moving on to the Finals.

Past feuds and grudges comes back to haunt 28 eager Challenge competitors, all vying for their share of $500,000. Romance is in the air at the Challenge house, but so is revenge, as the players plot their next moves.

While Challenge couple Brad and Britni plan on winning the game, players begin to plot their demise behind their backs. A player is caught stealing and generates a new vendetta.

After facing one of the most intense mental and physical final challenges ever, the vicious "Vendettas" cast members are reunited for the greatest, grimiest grudge-fest in MTV history.

When three players earn power, their vendettas worry about becoming easy targets. Marie’s romance with Kyle is threatened by her enemy, Cara Maria. TJ reveals a massive new twist that will explode the game.

The insanity and intensity continues in the second hour of the Finale with the most feuds and fights in the history of The Challenge. Our four finalists will find out who will be crowned the solo champion for the first time

Natalie balances a budding romance with her desire to prove herself as a strong competitor. An injured Melissa finds comfort with Nicole, but her true motives are questioned by her vendetta, Kayleigh.

With $500,000 on the line, the eight finalists compete for their share of the big money. However, two mercenaries return to make their road that much harder.