Mystery Box (S01E08)

As the competition narrows to just five survivalists, their alliances are put to the test, and fresh tactics unfold at HQ. Family members face the tough decision of which survivalist will sacrifice an essential supply of their choice. Meanwhile, a vital supply box is trapped in the frigid waters of a 48-degree lake, and only one survivalist has the chance to retrieve it before time runs out. In the ultimate challenge, families must lead their survivalists to crates stocked with supplies, relying solely on a compass for direction.