Lord of Rosenthorne Court and a leading member of the Architect's Guild: patron of the arts and sciences, accomplished magical researcher, discoverer of the Brooveron Comet, loving and devoted father and husband, and three-time Lithdale Cup croquet champion. It is his summons — dripping with excitement, paranoia and secrecy, and demanding the party come alone and tell no one — that opens the adventure. 'Brooveron' is the barony; Tatarmoff is the family name. His secret research is the construction of a planar gate, built in the uppermost chamber of Rosenthorne Court itself — the breakthrough he was so desperate and so frightened about. His attempt to activate it went catastrophically wrong, and the resulting detonation destroyed the manor's entire top floor.