Kiefer Sutherland has revealed that he is drawn to playing characters who are unlikely heroes.
The actor, who currently stars as father-of-one Martin Bohm in Touch, is also best known for his award-winning role as agent Jack Bauer in 24.
"I like that unlikely guy who rises to the occasion or at least does his best," he said.
"I felt the same about Jack Bauer. He was thrust by virtue of his occupation in a situation that was just unmanageable and he did the best he could. Martin, in many ways, is very similar. This is a guy who just wants to raise his son and is put in a situation that is far beyond his ability to handle, and yet he does the best he can."
Kiefer reprises his role as Martin - the father of autistic teenager Jake (David Mazouz) - in the second series of Touch, which begins on Sky1 tonight (April 2).
"At the end of the first season, he realises it's not just in his head. There are people who are after his son and they are willing to kill him to steal his son from him," he explained.
The 46-year-old hinted about new threats in the coming season.
"They are on the run. The second season really moves into the father trying to protect his son from a lot of different entities. So he's trying to navigate that with a son that sometimes steers him right in the middle of harm's way," he revealed.