The film expands on O'Sullivan's earlier reports for BBC Newsnight and The Guardian and explores conspiracy theories related to the assassination of United States Senator Robert F. Kennedy on 5 June 1968.

Lengthy audio clips are also provided that attest to Serrano's forceful manipulation at the hands of Los Angeles police sergeant Hank Hernandez and Sirhan's extreme suggestibility to hypnosis.

[3] O'Sullivan has stated that while researching a screenplay based on the Manchurian candidate theory of the assassination of Robert Kennedy, he "uncovered new video and photographic evidence suggesting that three senior CIA operatives were behind the killing.

"[3] He claimed that three men seen in video and photographs of the Ambassador Hotel immediately before and after the assassination were positively identified as CIA operatives David Sánchez Morales, Gordon Campbell and George Joannides.

[3] He then took his identifications to the Los Angeles Police Department, whose files showed that the men whom he had identified as Campbell and Joannides were in truth Michael Roman and Frank Owens, two Bulova sales managers attending a convention at the Ambassador.