Andrew Lincoln has revealed that his character Rick Grimes will be pushed to the edge by the zombie apocalypse in AMC's upcoming horror series The Walking Dead.
The British actor told IGN that police officer Grimes would struggle to reconcile his morals with the horror around him.
"Rick is a very centred, serious, practical man." he said. "He's also a simple man. He's got a very good moral centre. He's like a moral compass. And what happens is this eroding of his moral centre."
He added: "He wakes up to find the world has irrevocably changed. His motivational forces are obviously to find his family and discover what has happened to them. And what I've realised in playing him is that he is willing to go to any lengths. He's pushed into a corner and he's fighting his way out."
Lincoln also praised the show's zombie make-up and special effects, admitting that the appearance of the monsters had taken him by surprise.
"Every day I go to work and it's artistry, what's being done. It's funny, because we had two days with Jon Bernthal (who plays fellow cop, Shane) and this was pre-apocalypse. It was amazing because it felt like we were doing a cop show. And then suddenly I had that first day where I met my first zombie and I went, 'Oh... this is the show we're in!'"
Robert Kirkman, creator of the original comic series on which the show is based, previously praised Lincoln's casting in the role of Grimes.
The Walking Dead will air in October on AMC.