Spy MorMor au
Originally Sebastian Moran was hired to infiltrate Moriarty’s ranks, gather inside information and report back to Mycroft. Things get more difficult when he develops a rather unconventional relationship with his new boss. Secrets come out into the light and Moriarty reveals his true hand, a hand that Sebastian has been unknowingly playing into all this time. There is no love just ownership, and Jim owned Seb the moment he entered his office.