Treyarch and Activision have taken the wraps off the zombie level that drops next week as part of the Call of Duty: Black Ops map pack Escalation. "Call of the Dead" features horror icons Sarah Michelle Gellar, Danny Trejo, Michael Rooker, and Robert Englund—as well as the legendary director George A. Romero appearing as himself—defending themselves against wave after wave of...well, we'll just let you guess. Hint: the answer is ZOMBIES. There's also a nifty little trailer showcasing the grindhouse feel of the level. Get those Microsoft Points ready; the Escalation pack drops for Xbox 360 on May 3.