When Rolo arrives, we discuss how we can go about our search. Rolo types Jimmy Hagan in the search engine and pages of hits immediately appear. This is not going to be easy; most of the results are about a legendary Sheffield United player who I'm sure was never friends with Ethan or Nick. We dig a bit deeper and find hundreds of people called Jimmy Hagan on Facebook. We look through a few but nothing leaps out as a potential friend of our rising film star.

"Okay, I suppose we can call it a day," Rolo say...