Rogan O'Connor

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

After facing one of the most intense mental and physical final challenges ever, the vicious Vendettas cast members are reunited for a great, grimy grudge-fest.

Past feuds come back to haunt 28 Challenge competitors, all vying for their share of $500,000. Romance is in the air at the 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 starts a new vendetta.

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 problem.

When the mysterious and offensive notes continue to circulate the Challenge house, it causes a stir amongst the female competitors and the culprit is finally revealed. When four Challenge legends return, the game is turned upside down.