Conspiracy theories abound when Alberto Nisman is found dead, hours before he planned to present the results of his investigation into the AMIA bombing.

Special prosecutor Fein discusses investigating the crime scene. Experts debate contradictory evidence and ask: Was Nisman's death suicide or murder?

Stiuso talks partnering with Nisman on the investigation and the alleged link between Iran and the bombing. Victims' loved ones remember the tragic day.

Nisman's ex-wife and others reveal events that occurred in the days before his death, including his accusation against Cristina Fernández de Kirchner.

Criminal experts examine blood-splatter evidence to determine whether Nisman was murdered. Lagomarsino is interviewed about his connection to Nisman.

Stiuso is questioned about his conflicts with Bogado, Ocampo and others, as contradictions between major players in the AMIA case come to light.