Johnny Depp will appear on this Saturday's "48 Hours Mystery" as he makes a plea for a new trial for the West Memphis Three, three teenagers accused of murdering three boys in a satanic ritual in 1994.
As seen in the preview clip below, Depp says, "I firmly believe Damien Echols, Jason Baldwin and Jessie Misskelley are totally innocent. It was a need for swift justice to placate the community."
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