S1, E1: In this one hour pilot, our modern day Sherlock and John meet for the first time in contemporary London. A serial killer is on the loose and the only connection is a seeming obsession with the colour pink. Sherlock, an analytical and deduction obsessive, is helping the police out with their enquiries just for fun, when he runs into potential flatmate Dr John Watson, just back from serving in the war in Afghanistan and sporting a limp. Together the two make a formidable duo...