The new Fox Nation documentary 'He Killed Them All? The Robert Durst Investigation' dives into the complex and prolonged investigations surrounding millionaire real estate heir Robert Durst, who is linked to three murders: his wife Kathleen, friend Susan Berman, and neighbor Morris Black. The film features interviews with investigators, family members, and judges involved in the high-profile trials, providing a multifaceted view of Durst's life and the crimes attributed to him.

Durst's infamous history begins with the mysterious disappearance of his wife, Kathie, who was last seen in 1982 and has never been found. The documentary delves into the peculiarities of Durst's personality and behavior, noting his conflicting image as a highly intelligent but allegedly bizarre figure. It highlights how these traits complicated both the investigation and the subsequent legal proceedings against him, culminating in a conviction for murder in the case of Morris Black, which underlined his controversial and controversial life.

In addition to investigating the murders, the documentary examines broader themes of wealth, privilege, and accountability, showcasing how Durst used his resources to navigate legal challenges. The troubling story of Robert Durst serves as a cautionary tale about how financial power can sometimes shield individuals from the full repercussions of their actions, raising questions about the effectiveness of the justice system in such high-stakes scenarios.