A new ex arrives with a secret that scandalizes the whole house. One of the exes is voted off the beach. Couples (and former couples) face their worst nightmares when they are introduced to the Shack of Secrets.

The house must decide who has it worse when one single finds himself caught between two exes and another is faced with his most dreaded ex. A sexy date turns into total chaos.

Angela turns to her ex when she hears about what happened between her current man and someone else. The two women fighting over Chase suddenly find themselves fighting over the new guy in the house.

In a surprise twist, the exes find themselves with all the power. Derrick schemes and tries to manipulate the house. Two new exes arrive and one is more welcome than the other.

Cory's ex, Alicia, returns and sends the house into chaos. An ex is sent to the beach for the first time. Dirty secrets are revealed in the Shack of Secrets in the elimination leaves everyone's surprised.

Paulie and Lexi finally define the relationship but a trip to the Shack of Secrets threatens to tear their time in paradise apart. A new ex arrives to make an old ex jealous and crashes the party, literally.

Jasmine is tempted to bring a new man into the mix and kick someone else out. When Alicia rips into Cory, everyone gets pulled into the drama. Relationships are on the line when the exes jeopardize their place in the house.

Cory and Taylor's relationship is pushed into the danger zone when Cory's lingering feelings for Alicia come to light. A comment triggers an explosive fight in the house. A new ex arrives and receives unexpected news.

The house is shocked when all the eliminated exes return. A game of Dare or Double Dare is innocent fun until Angela and Derrick do something that they shouldn't. The house regroups after the big fight.

A trip to the SOS threatens to break up a newly reunited couple. Chase's love triangle games finally come to a head. The singles must decide if they're leaving Hawaii with love or solo.