Interchangeable - Chapter 1 - elwinglyre - Sherlock (BBC TV 2010) [Archive of Our Own] Chapter 4 : jobooksncoffee : elwinglyre : Chapters: 4/6 Fandom: Sherlock (BBC TV 2010) Rating: Explicit Warnings: Creator Chose Not To Use Archive Warnings Relationships: Sherlock Holmes/John Watson Characters: Sherlock Holmes, John Watson, Greg Lestrade, Sally Donovan, Philip Anderson (Sherlock BBC TV), Mycroft…