Day Zero

An embarrassing moment arises as Russell's thoughts are misinterpreted, leading to rumors.

A plan to leave the camp after a hybrid incident, is met with mixed emotions. Soon, a revelation is brought to light regarding the hybrids as Rachael becomes a liability.

Cameron's altered behavior creates fear among the group. Elsewhere, Blake and Rachael have an intimate discussion.

The season ends with an increased hybrid presence, threatening the survivors' hopes of keeping their home base. And efforts to find a cure to save one of their own, forces them to contemplate mercy killing.