Hayden Panettiere's Tragic 911 Call: What Really Happened?

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Zach Hickerson’s desperate attempts to save actress Hayden Panettiere’s life have been revealed in a new 911 audio.

A 911 call obtained by CBS News revealed Brian Hickerson’s brother called authorities in a panic after finding the “Heroes” alum unresponsive in an Airbnb in South Carolina on Aug. 16.