When three Hogwarts students are murdered, Harvard symbologist Robert Langdon goes undercover as the new DADA teacher. Assisted by Harry, Hermione, and his old flame Professor Septima Vector, Langdon unearths deadly ancient secrets at Hogwarts.
Crossover - Harry Potter & Robert Langdon series - Rated: T - English - Mystery/Adventure - Chapters: 11 - Words: 48,492 - Reviews: 213 - Favs: 191 - Follows: 240 - Updated: 8/13/2011 - Published: 11/9/2010 - Harry P., R. Langdon