Purgatory

Eight years earlier, we see what really happened that night, as Chris comes clean with Marie, before telling the rest of the group. He and the others discuss a plan to take down Bobby.

The fallen matchstick confirms that the hatch door has been open. While Chris and Emma have a heart to heart about giving up, Jessica and Nora sneak off to visit Bobby, who has a lewd offer for Nora. Inspectors Bancu and Popa still have little to go on.

The honeymoon is long since over for Lisa, as Bobby's true colors have come out once again. She desperately tries to flee, but Bobby's not ready to let her go yet.

Emma confides in Jessica, letting go of some secrets she's carried the whole time they've been trapped. Desperate to do whatever it takes to find his son, Preston gives a press conference and offers a reward for information.

Bound and gagged by Bobby, Lisa valiantly tries to escape and gets ever so close. As Preston is left to confront his new reality, the Inspectors are left following a trail of silenced witnesses.

With no doctor to tend to bullet wound, another member of the group falls, but not before offering some words of hope for the person who needed to hear it most.

More truths are revealed, as the group discovers that there were two guns inside the cave. Meanwhile, the Inspectors have managed to find the location of Shambala, and call on Preston for help getting there in a hurry.

With the ultimate revenge for Alex's death in sight, the group learns the remaining pieces of the puzzle that has plagued them for far too long at this point.