The queens orders

Grell Sutcliff the reaper hasn't been in London pestering his precious Sebastian for a few months. Though its a great relief for the demon butler he can't help but feel concern. However he has to put his concerns aside for the Phantomhives future guest. A US Marshal that is referred to only as J.M. Martinez and the marshals associate known only as R.G.S. The manor has to play host to the marshal while they hunt down an American fugitive known as Billie the kid.(A female Billy the Kid). But their in for quite a surprise when they meet their guest at the port of London when Sebastian realizes he must be frighten for his life...