Professors and Staff

Phineas Nigellus Black: Headmaster of Hogwarts. He is a former Slytherin, and previously served as Hogwarts' History of Magic professor. He is a known opponent of mixed blood and Muggle-born wizards and witches' attending the school.

Madame Helena Blavatsky: Professor of Divination and head of House Hufflepuff. She is known in the Muggle world for her interest in spiritualism.

Chevalier Auguste Dupin: Professor of Potions and head of House Ravenclaw. He was a famed detective in Paris before coming to teach at Hogwarts.

Ada Lovelace: A staff member who built the school's Analytical Engine (one of the few in England!) and assists Professor Moriarty with his Arithmancy class.

James Moriarty: Professor of Arithmancy and head of House Slytherin. He is known in the Muggle world for his work with mathematics.

Abraham Van Helsing: This former Auror is the head of House Gryffindor and the professor of Defense Against the Dark Arts.

Anemone: Hogwarts Grounds and Housekeeper, who manages the house elfs and helps to keep the students in line.

Students

All students are 7th year

House Gryffindor

Percy B. Longbottom

Wilhelmina Murray

Eglantine/Ezra Pickman

Edwina Weasley

House Slytherin

Renata/Roland Whateley

Artemisia Black

Daniel/Danielle Lessingham

House Hufflepuff

Alice Liddell

John Watson

Prince Leopold, Duke of Albany

Belinda Kruppe

House Ravenclaw

Sherlock Holmes

Irene Adler

Others

Tarik Khaldun: the Special Director of Magical Antiquities for wizarding Egypt, visiting tonight to oversee the opening of the sarcophagus.

Tobias Smoot: England's Minister of Magic and a former Gryffindor; here to oversee the opening of the sarcophagus and its transport to the Department of Mysteries.

Alice Liddell's familiar (The Cheshire Cat): This cat has been with Alice Liddell ever since she returned to Hogwarts for her seventh year.