I could only shoot when the subway was on the other platform. Little things like that, and the platform is very narrow. It's not like you can hide if a subway comes so a lot of things happened because of that. Or a thousand people just came and looked straight into the lens like they didn't expect a movie to be shooting.

I think it's very interesting for a director that enjoys thrillers and mysteries like I do to have the challenge to do that.

I could only shoot when the subway was on the other platform. Little things like that, and the platform is very narrow. It's not like you can hide if a subway comes so a lot of things happened because of that. Or a thousand people just came and looked straight into the lens like they didn't expect a movie to be shooting.

Producers and studios want to make movies that are more appealing internationally and I think that you have to use your different cultures as an advantage to be able to make those movies.

Obviously in the close-ups we bring extras around or we do it later, but them running in and the big shots, they don't know. They're just coming out.

You know how hard it is to swim take after take and perform the next day swimming again? Me, I'm a terrible swimmer, but most actors with that tight schedule would be sick pretty quick.

For me, it was the challenge of doing a movie that is in one location. Usually, there are a few scripts obviously always going around with stories that happen in one location.