Accidental Youth

After Dartmoor, Sherlock becomes obsessed with his current experiment, which has to do with the hallucinogen that affected them. Unfortunately an accident creates a mix of chemicals and a small explosion which has unexpected results. Now Greg Lestrade and Mrs. Hudson have two small wards until Sherlock can fix it. Kid!Fic, Paternal!Lestrade, Sherlock/John, post HoB. NOW COMPLETE!