'Scream 4' Secrets: The Extraordinary Lengths The Cast Went Through To Prevent Spoilers

Every movie depends on secrecy to a degree, but the "Scream" franchise hinges upon it entirely. If you go into your first screening knowing who the killer is, there's no question that you're missing out on some of the wonder that Wes Craven and his team have in store for you.
"Scream 4" hits theaters tonight [...]

Katie Cassidy Katie Holmes Katy Perry Keira Knightley Kelly Brook