John Bell got his family involved to prepare for the role of Young Ian.

"I’ll be honest; I went straight to the Wiki page, because I wanted to find out as much as I possibly could as quickly as possible,” he says on when he found out he got the part. “I read everything that I could on that, and that’s when I got the books. I got my mum to start reading the books, and I got my gran to start reading the books. We’d all get together in a little book club and discuss."