500
These are all the titles, in order, of the books in Lemony Snicket's "A Series of Unfortunate Events."
What are: (1) The Bad Beginning, (2) The Reptile Room, (3) The Wide Window, (4) The Miserable Mill, (5) The Austere Academy, (6) The Vile Village, (7) The Ersatz Elevator, (8) The Hostile Hospital, (9) The Carnivorous Carnival, (10) The Slippery Slope, (11) The Grim Grotto, (12) The Penultimate Peril, and (13) The End?