Sherlock knew he couldn’t stop the explosion any more than he could turn back time and make sure none of this could ever happen. He needed to make the most of what time he had left with John. They would be together in these final moments and that was what truly mattered.
AU - Mycroft Holmes leads the grim war on terror and Sherlock is his best secret agent: cold, calculating and ruthless. He is obsessed with destroying the militant terrorists hiding deep in the disused London Underground - until one momentous day when he meets a child soldier named John.
Rating PG-13
Genre Adventure/Action, Kidfic, Espionage, Romance, Dark,
Characters Sherlock/Irene, Sherlock&John, Mycroft/Anthea, Lestrade, Sally Donovan, Anderson, Moriarty
Length 40,000+ 16 Chapters
Read on AO3