Famed prosecutor and defense attorney Marcia Clark delves into some of the most controversial homicides in America. These are cases that have shocked and captivated the public, but have outcomes that are either unresolved, or leave more questions than answers. Now, Marcia will speak with experts, review the facts, and use her own expertise to shed new light on cases which have been left in the darkness. See more Marcia Clark Investigates The First 48 on A&E, at aetv.com, and on Crime + Investigation in the UK.