When a crew member is found dead on Trident nuclear submarine HMS Vigil, Detective Amy Silva is flown onboard to investigate.

November, 2006. Two Police officers are summoned to a hospital in London to interview a man named Alexander Litvinenko, who claims to have been poisoned.

The Top 5 artists perform a ballad and an up-tempo song in front of the coaches for their chance in the Live Finale. Viewers will have the chance to vote for their favorite artist overnight.

With the start of the Baja 1000 just five days away, the teams are all in Ensenada, Mexico. In the hours before the race starts something always goes wrong. Which teams can power through and overcome?

Castaways must choose heart or head as they enter the final six and last stage of the game; letters from home feed the soul and strengthen bonds during this week's reward at the sanctuary.

Wracked with grief over Ellie's death, Rowan is out of control, unfit to perform surgeries. Her paranoia that someone is following her is proven true.

The Top 5 artists perform a ballad and an up-tempo song in front of the coaches for their chance in the Live Finale. Viewers will have the chance to vote for their favorite artist overnight.

With time running out, each of the teams face challenges while getting ready for race day. Whether it's diagnosing a mechanical problem or getting used to a new partner, everyone is under the gun.

Irene gets Formula 1 lessons in Faenza with the Toro Rosso team, learning how to deal with a single seater vehicle and how to work with a team.

Wracked with grief over Ellie's death, Rowan is out of control, unfit to perform surgeries. Her paranoia that someone is following her is proven true.

November, 2006. Two Police officers are summoned to a hospital in London to interview a man named Alexander Litvinenko, who claims to have been poisoned.

The Top 5 artists perform a ballad and an up-tempo song in front of the coaches for their chance in the Live Finale. Viewers will have the chance to vote for their favorite artist overnight.

In the aftermath of Deirdre's grisly death, Rowan searches for safety in a strange city. Sip provides her with a safehouse while he investigates Deirdre's murder. Lasher makes contact with Rowan - but not in the way you might expect.

The remaining castaways enter the final stretch of the game; a major come-from-behind win earns one person a trip to the sanctuary and a spot in the final four; one castaway is crowned Sole Survivor and awarded the $1 million prize.

Carson Daly reveals who America has chosen to be the Season 27 winner.

Gary worries the wolf didn't know him, so when he meets someone 'normal', Mary gives Gary an out.

When Anton turns up, Mary picnics. As another full moon rises, should she just let her wolf run free?

Bunny’s nightmarish odyssey comes to an end at the sales expo as he faces down his demons, while Junior finally manages to let go of his father.

As the night shift begins, Robby refuses to give up on a mass casualty victim. Samira and Santos each attempt risky moves.

The Lords are at their lowest ebb, and the game might be up for Cindy. Meanwhile, Albert is back on the rise ... but for how long?

Albert seems to be an unstoppable force, stopping short of nothing to reclaim his former glory. Who will curb his reign of terror?