Set after S3. Mycroft agrees to keep an eye on his little brother for the government. However, this proves harder than he first anticipates. What with John being occupied by the arrival of the baby- and himself lacking the usual sensitivity- Mycroft decides to hire a failing actress to play the perfect part. For Fith, everything changes. Especially with the return of Moriarty.

There's not a job Fith would refuse if it meant getting paid well. For her, gold is everything, and Erebor's notorious for its riches. After encountering The Company of Thorin at Trollshaws, Fith is invited- albeit reluctantly- to defend the group on their travels to Erebor. What appears to be a simple task quickly grows treacherous, and Fith soon finds herself defenceless.