The Head Show Summary, Upcoming Episodes and TV Guide

After another scientist turns up dead, the mole reveals their true identity – and asks for a favor in return.

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.

Far from land, Arthur Wilde and his team of scientists celebrate the culmination of decades of research: a solution to climate change. Then, a gruesome murder – eerily similar to Wilde's South Pole nightmare – occurs onboard.

Back in Polaris V, the team did not find the radio parts they were looking for. But Maggie insisted to take the body found in the Polaris V back to Polaris VI.

The surviving winterers are now certain that the killer was one of them. But who? And why? They need help. The Sno-Cats were their only chance to get close enough to the Argentinian station to call for help.

In the middle of the winter, a small group of scientists in charge of an international base in the Antartica during the long polar nights stops communicating with the outside world.