Brother Dearest

When Mycroft goes missing, Sherlock and John are the only ones the British Government can rely on to help. But all may not be as it seems, as the bond between brothers is tested.

Background: post-Reichenbach but pre-His Last Vow (basically series 3 kind of).

**Author's Note: this hasn't been updated in ages but hopefully I'll get some more time soon. Trying to focus on my other fic atm!** :)