article_snippet.sent: Mark was obsessed with the TV show Dexter which features a serial killer .
article_snippet.sent: Michael C Hall who starred as Dexter in the TV show Dexter which features a serial killer . '
article_snippet.sent: Unknown to the couple, Mark was secretly sending Mark friends text messages saying how much Mark hated Mark mother and began stabbing the punch bag in Mark bedroom while also becoming obsessed with the TV show Dexter, which is about a serial killer. '
article_snippet.sent: I mean, Mark is a serial killer.'
article_snippet.sent: US TV series Mark features a fictional police worker, Dexter Morgan, a blood spatter pattern analyst for the Miami Police Department, who leads a secret life hunting down and killing criminals he believes deserve retribution.
article_snippet.sent: Orphaned at the age of three, US TV series Dexter was and adopted by a Miami police officer who recognised he had homicidal tendencies .