The Parallax View was a 1970 novel by Loren Singer. It was made into a film of the same name by Alan J. Pakula as part of his "paranoia trilogy." The basic idea that inspired Singer to write the book was a group of witnesses to JFK's murder who are systematically bumped off themselves. In the course of investigating why it's happening, they discover the Parallax Corporation and its nefarious raison d'être.
⚠️ Spoilers lie ahead!
Links:
https://en.wikipedia.org/wiki/The_Parallax_View
https://www.military.com/video/guns/pistols/cias-secret-heart-attack-gun/2555371072001
The Loneliest Job in the World: https://iconicphotos.wordpress.com/2010/07/18/the-loneliest-job/
JFK & Caroline: https://www.theguardian.com/artanddesign/2020/aug/23/the-big-picture-a-tender-family-moment-with-jfk
https://web.archive.org/web/20081222052324/http://www.time.com/time/magazine/article/0,9171,943929,00.html
https://www.theguardian.com/film/filmblog/2013/nov/19/the-parallax-view-kennedy-assassination
https://www.filmscoremonthly.com/notes/parallax_view.html
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