Gladiator Problems

Sara Winchester had finally met the Sherlock Holmes. She met him because John Watson blogged that him and Sherlock couldn't figure out a case. Sara's brothers, Sam and Dean, were reluctant to let her go, but Castiel took her to London. Sara soon realizes that this case is going to need the help of a certain alien, his companion and one of his old friends. Will there be a romace? Will someone die? How many beers are the Winchesters going to drink? I do not own the Sherlock, Supernatural or Doctor characters, etc. I do own my OC's. My plot will not affect any episode in these series.