Carrie Mathison (Claire Danes) in Homeland
The big revelation in the first episode of season six is the fact that Quinn (Rupert Friend) has miraculously survived.
At the end of season five, he was close to death after suffering a brain haemorrhage due to a close encounter with Sarin gas.
Many fans were left devastated after it looked as though Carrie Mathison (Claire Danes) was letting Quinn die in hospital.
Carrie was seen disconnecting the machines keeping him alive with some fans assuming that she would euthanise him.
As Carrie stood by his bedside, viewers heard the letter Quinn had left for her in the event of his death. “Carrie, I guess I'm done,” his voice-over said.
But fans were relieved to see that Quinn had survived when he reappeared in the first episode of season six, called Fair Game.
Nevertheless Quinn is not fully recovered and is now struggling with neurological injuries and hallucinations.
President of programming Gary Levine had previously hinted at Quinn's survival.
Peter Quinn was close to death at the end of season five
Peter Quinn reappears in season six of Homeland
He said: “Quinn is severely damaged. There is no question about that.
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"So the life-or-death question remains, but it will not be – if he should live, it will not be in any way, shape, or form the way he has lived to date."
Carrie returns to the US to work as an advocate for Muslim Americans in season six.
Meanwhile, her mentor Saul Berenson (Mandy Patinkin) and Dar Adal are briefing the incoming President Elizabeth Keane.
Showtime boss David Nevins told reporters: “After setting the show in Afghanistan, Pakistan and Europe, [we] wanted to do another American story.”