Black Butler, Vol. 10

With his royally sanctioned dinner party a shambles and a murderer on
the loose, Earl Ciel Phantomhive is a veritable prisoner in his own
home, alongside those of his guests who still live. And in the most
shocking of turns, the young earl now finds himself without his
indispensible manservant, Sebastian. But as the mystery deepens, there
arrives upon the young earl's doorstep an odd vicar, wearing an insolent
smile and an Inverness cape that flaps and splashes behind him... Is this
mysterious thirteenth guest the perpetrator of the crimes that have
bloodied the halls of Phantomhive Manor?