This season, aptly titled Blood vs. Water, taking a spin on the proverb "Blood is thicker than water" by pitting bloodlines against one another and testing the boundaries of the competition.
"In a certain situation, are you going to help your blood relative or take 'em out?" poses host Jeff Probst. "...I don't think every couple is going to choose to support their partner. Absolutely not."
Among the couples and relatives competing against one another this season are trios of returning Heroes and Villains contestants (Tyson Apostol [with girlfriend], Rupert Boneham [with wife], Candice Cody [with husband]) and returning One World contestants (Monica Culpepper [with husband], Colton Cumbie [with fiancé], Kat Edorsson [with boyfriend]).
Get to know the contestants in the video above before Survivor: Blood vs. Water premieres September 18 at 8 p.m. on CBS.