6 épisodes
(3 h)
S4 E1 • Episode 1
A homeless man with a history of intravenous drug use is admitted in a critical condition and finding a healthy vein is proving to be a serious problem. John finally decides to go to Emergency after falling from his roof two days earlier. A pair of Scottish backpackers get more than they bargained for when they start hallucinating, but no one can work out what they have taken.
Première diffusion : 4 février 2016

