 Continual references are made to The Wizard of Oz. In episode 1 of  season 1, Tyler leaves the station with the intention of walking  back to reality. He says to Cartwright that he is going to follow  the yellow brick road. In episode two, after the principal drama  has resolved Tyler suggests to Hunt that his guv transfer him back  to the division he came from. Hunt obliges by picking up his phone  and saying that the Wizard of Oz will sort it out because of the  wonderful things he does. Throughout the series Hunt insultingly  refers to Tyler as Dorothy. In the final episode the song Over  The Rainbow can be heard in the soundtrack.