Here we see those masters of disguise, those detectives without peer: Thompson and Thomson (Simon Pegg and Nick Frost respectively). Known for their bowler hats, moustaches, walking sticks and inability to detect their way out of a paper bag, the pair are much loved characters. They have a habit, especially in the early books, of each following the other’s statement with, “To be precise…” and then a repeat of exactly the same statement. They’re easily confused (in every sense) but according to screenwriter Joe Cornish the secret is to look at how their moustaches curl to tell Thompson with a P from Thomson without.