AMC has released three new teasers for The Walking Dead, Frank Darabont’s much-anticipated adaptation of the long-running Image Comics series by Robert Kirkman, Tony Moore and Charlie Adlard.

Two of the spots, "Rick's Gun" and "Darkness," are blink-and-you-miss-them bumpers, but the third -- it's called simply "Hospital Corridor" -- provides us with a different, and certainly chilling, look at the scene previously glimpsed in the Comic-Con trailer where Rick Grimes (Andrew Lincoln) awakens in the seemingly empty hospital.

The series, which also stars Jon Bernthal, Sarah Wayne Callies, Jeffrey DeMunn, Laurie Holden, Steve Yeun, Emma Bell, Chandler Riggs, Michael Rooker and Norman Reedus, debuts on Halloween.