“When it came to kind of putting together the character of Cathal, how did you approach that?”

“Read loads. Read a lot of stuff. Read as many books as I can of like…people with personal experiences of drugs themselves. Parents who have lived through it. The last thing I wanted to do would be for anybody who’s went through a similar thing, or any families who’ve had kids who’ve gone through that to watch that and go, that’s…that’s not how it is, that’s not how it works.”