Heart of Darkness: Season 1, Episode 4

1 - 4: Mommy Dearest

Sara Williamson Raras is a brilliant mathematician who thinks she finally has the life and family she always wanted. But when the 35-year-old is found brutally murdered one year later, the investigation quickly focuses on her estranged husband Alberto. But when Alberto's alibi checks out, the case goes cold. Months later, a jailhouse snitch reveals new information that points to an unlikely suspect, a person Sara trusted, whom no one would ever expect.