When journalist Danny Casolaro was found dead in a hotel bathtub, police ruled it a suicide. But his family and colleagues believe he may have been murdered for investigating a conspiracy he called "The Octopus" - a hidden organization connected to stolen government spy software, a string of unsolved murders, and some of the biggest political scandals of the 20th century. Years later, researcher Christian Hansen pushes to uncover the secrets behind Casolaro's death, and the story that killed him.