As the Alexandria threatens to explode, the remaining scientists jump ship and onto the only life boat – putting them face-to-face with the real killer.
After another scientist turns up dead, the mole reveals their true identity – and asks for a favor in return.
After breaking out of his confinement, Charlie cuts the ship’s power once again and embarks on a murderous rampage. As Olivia finds herself one step closer to Rachel, Gloria pulls away from Wilde.
With Charlie locked up, Amy brings lingering doubts to Wilde, confirming his greatest fears. In the U.K., Olivia and her sister are attacked while plotting their revenge.
In an isolated and inaccessible Antarctic research station in which winter has fallen on the South Pole and the sun will soon disappear for the next six months, a small team, known as the Winterers, remain at the Polaris VI Antarctic Research Station to continue their innovative research. Renowned biologist Arthur Wilde is determined to find a solution to climate change, but his quest turns into a nightmare when several of his esteemed scientists suddenly begin to die.