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"The Dexter Killer"

Name: "The Dexter Killer"
Uploaded: 2022-04-23T22:00:00-0400
Duration: 41 min 40 s
Description: Inside the mind of murderer Mark Twitchell. Newly revealed letters from the man police say wanted to be like fictional serial killer Dexter. "48 Hours" contributor Troy Roberts reports.

Inside the mind of murderer Mark Twitchell. Newly revealed letters from the man police say wanted to be like fictional serial killer Dexter. "48 Hours" contributor Troy Roberts reports.