The Count of Samerand and the Ghost of Belgravia

It is April 5, 1864, when the Count of Samerand busy in his experiments is commissioned by his good friend inspector James Wright in the murder of Robert Melbourne, a wealthy landowner from the states who has been found murdered by the house staff. The case should be a simple one for one so versed in crime, but circumstances are not what they seem to be, and the murderer has disappeared from a room that is barred from all sides. Will the count with all his worldly knowledge find the killer or has he met his match?