Watch Series Marcia Clark Investigates the First 48 Online at Couchtuner. Led by expert prosecutor and former defense attorney Marcia Clark, A&E’s new original docuseries “Marcia Clark Investigates The First 48” delves into some of America’s most shocking crimes that have remained unsolved or ended with controversial outcomes. Each two-hour episode will focus on a specific case and examine the first 48 hours after the crime to reveal new angles and unravel enduring mysteries. “Marcia Clark Investigates The First 48” will pore through controversial cases including: the death of Casey Anthony’s daughter Caylee; the murder of actor Robert Blake’s wife Bonny Lee Bakley; the disappearance of Drew Peterson’s wife Stacy; the shocking death of Federal Bureau of Prisons intern Chandra Levy; the fatal shooting of Run D.M.C member Jam Master Jay; the Billionaire Boys Club’s obsession with money and power that may have turned to homicide