สัญญาณสยองโลก

Mel Gibson

Graham Hess

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Merrill Hess

Rory Culkin

Morgan Hess

Abigail Breslin

Bo Hess

Cherry Jones

Officer Paski

เอ็ม. ไนต์ ชามาลาน

Ray Reddy

Patricia Kalember

Colleen Hess

Ted Sutton

SFC Cunningham

Merritt Wever

Tracey Abernathy

Lanny Flaherty

Mr. Nathan

Marion McCorry

Mrs. Nathan

Michael Showalter

Lionel Prichard

Kevin Pires

Brazilian Birthday Boy

Clifford David

Columbia University Professor

Rhonda Overby

Sarah Hughes

Greg Wood

TV Anchor

Paul L. Nolan

Mexico City Reporter (voice)

Ukee Washington

Off Screen TV Anchor (voice)

Babita Hariani

Car Radio Voice (voice)

Adam Way

Radio Eye Witness (voice)