A special called "The Darren Mack Case", will air tomorrow, February 24th, on CBS, on the program 48 Hours.
Here is some more relevant information on the case:
Former Landmark leader wanted for murder surrenders to FBI - Cult News
Alleged murderer and sniper linked to Landmark Education - Cult News
Reno man called kin after judge was shot: He's wanted in wife's slaying, sought for questioning on jurist - San Francisco Chronicle
"48 Hours"The Darren Mack Case (2007) - IMDB