Without giving away any spoilers, what is “The Prostitutes’ Ball” about?

Shane Scully is teamed up with a new partner, Sumner Hitchens and these two guys start off hating each other.  They’re assigned to solve a multiple murder out by the pool of this vacant Hollywood Hills mansion that’s used for call girl parties.  Shane and Hitch think they’ve solved this murder case, but then they discover new evidence that leads them into another case that is bigger than either one of them could have ever imagined.