CNN goes on the trail of a suspected serial killer with a man who went undercover to nab him. Don't miss "CNN Presents: To Catch a Serial Killer" at 8 pm ET Sunday night, replaying at 11 pm ET and 2 am ET.
CNN Presents focuses on fresh in-depth stories and investigative reporting.
CNN Presents airs Sundays at 8:00 pm ET and 11:00 pm ET, and replays Saturday at 8:00 pm ET and 11:00 pm ET.
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Click here to access transcripts from recent shows.