Oxygen's 12 Dark Days of Serial Killers Promises to Be ''the Biggest Event in True Crime History''
Listen up, true crime fans! Things are about to get dark on Oxygen as the network has announced its "deadliest event," 12 Dark Days of Serial Killers, airing April 9 through 20. Through two new specials, Catching a Serial Killer: Sam Little and Snapped: Notorious Hollywood Ripper, and the season premiere for Mark of a Killer and the season finale for The DNA of Murder With Paul Holes, Oxygen is producing the biggest event in true crime history.