Wayward Pines will keep the WTF moments flowing through the back half of the season.

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The Fox miniseries has morphed into a post-apocalyptic storyline - much to viewers' surprise - and "Choices" will continue to shock viewers as the town's new sheriff gets an exclusive tour of Pines inner workings.

"Huge secrets are coming out in this episode," director Jeff T. Thomas teased in a behind-the-scenes featurette.

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Pilcher has taken his legerdemain to extreme heights - hiding over 200 volunteers inside a mountain in order to run humanities last hope at civilization. After all, the Idaho town can't run itself.

"The super structure was created by Pilcher back in the 2000s," Thomas explained. "He created it knowing that humans were going to mutate over the next few hundred years. So, he built the super structure as a support base to Wayward Pines."

What else could the good doctor be hiding? Well, the truth behind Pam is definitely one mystery the savior of mankind has tucked up his sleeve. Luckily, "Choices" will also spill on the Pines' creepiest nurse.

Find out more when Wayward Pines airs Thursdays on Fox. Click the video below to see a preview for "Choices."