World famous prosecutor, Marcia Clark, dissects the suspicious death of Rebecca Zahau, girlfriend of multi-millionaire pharmaceutical tycoon, Jonah Shaknai. When Rebecca’s body was found tied, gagged and hanging naked outside her boyfriend’s seaside mansion, law enforcement quickly determined her death was a suicide. But was it a suicide or was it murder? On the hunt for the truth, Marcia combs for clues in the First 48 of this mindboggling, real-life mystery to determine what happened to Rebecca Zahau.