David and Mary ask for directions to Petrohue and learn that they are way off. Elsewhere, Mirna and Charla are in a little office with Bill and Joe, and Mirna is asking someone what La Maquina is. Joe is kind of confused when she keeps mentioning Petrohue, and he's all, "What does Petrohue have to do with any of this?" and Mirna breaks the news that they're missing half of the clue. "You're lucky you're with us," Mirna says condescendingly. Joe can only say that he never saw that part of the clue. I feel really bad for Joe, because he's way too good to get sneered at by freaking Mirna, of all people. In the car, Mirna can't stop talking about how good a person she is for telling them about the other part of the clue. She loves nothing more than the opportunity to congratulate herself, so she's probably happy it turned out like this. "Maybe we're not cutthroat enough for this game," Mirna sniffs. In their car, Bill and Joe are discussing how happy they are that they saw Charla and Mirna. Well, for the sake of getting directions, they're happy.

As Rob and Amber get out of the raft, she calls to the guide, "Thank you, we had fun!" That's kind of why I think she's an all right girl. She really does try to be nice to people, I don't think she's mean... I think she's reasonably decent. And she's a busy spaz-wrangler, you know? At the end of the course, they get out and pull a clue from a box, and the clue tells them to head to the pit stop. Phil explains that the teams will travel three and a half miles to Playa Petrohue, a black volcanic beach that will serve as the pit stop. Last team in "may" be out. Rob and Amber catch a shuttle back to where their stuff is.

In Dave and Mary's car, she just hopes that someone else screwed up besides them.

Rafting are the BQs, who are looking for a clue somewhere along the river.

Rob and Amber hop in their car and head for the pit stop.

The BQs finish the course and pull a clue that sends them to the pit stop. In the shuttle, Kandice tries to keep her smile plastered on as she's like, "So, we didn't have to do a Detour." And Dustin is all, "Um, no." They agree that "that's good." So at this point, (1) they were supposed to find a sign that they didn't find, (2) they were supposed to look for a clue, and the only clue they found was simply waiting at the end of the course they rafted, and (3) they're being sent to the pit stop without a Detour. This should be a sign that something is not right.