Marcia Clark Investigates The First 48 - Season 1 Episode 1 -

World famous prosecutor, Marcia Clark, investigates the bone chilling, unresolved death of toddler Caylee Anthony. Was this beautiful little girl murdered by her own mother, Casey Anthony? With a visceral connection to the case, Marcia leaves no stone unturned as she attempts to discover the truth buried deep within the First 48.