"For me, it was the script. When I was listening to the script, I was very stressed and tense as I could not predict what is going to happen (in the story). So I found the story very exciting," said Aamir.
The actor, who spoke on the sidelines of a recent event here, says the movie goes beyond being a mere thriller.
"It's not only a drama and a suspense, but also a very emotional story. We all love someone or the other, who is close to us - our parents, our children, husband or wife, or lover. We are always scared of losing them," he said.