As Deep As Oceans Go - Sherlock x OC

[Based on the BBC Series: Sherlock]
Lillian Stewarts isn't customary to the average lifestyle in London. Being born filthy rich, she finds having a real job is pointless as she tags along with the brilliant, yet eccentric Holmes, serving as consultants to Scotland Yard. When Dr. John Watson, a war veteran, answers to the advertisement for a flatmate on Baker Street, the trio embroils themselves in mysteries, and Sherlock's nemesis, Moriarty, appears to have a hand in the crimes. The villainous adversary attempts to use Lillian in his pursuits to get to Sherlock; however, neither are keen on falling into his schemes.