Rodney Alcala

>studied film under Roman Polanski at New York University.[9]

https://en.wikipedia.org/wiki/Rodney_Alcala

David Berkowitz

>Berkowitz began to claim that he had joined a Satanic cult in the spring of 1975.[103]

>he added that a Yonkers police officer, also a cult member, was involved in this crime.[32]

https://en.wikipedia.org/wiki/David_Berkowitz

Ted Bundy

>Bundy joined Governor Daniel J. Evans' re-election campaign.[49] Posing as a college student, he shadowed Evans' opponent, former governor Albert Rosellini, and recorded his stump speeches for analysis by Evans' team.[50][51] After Evans was re-elected, Bundy was hired as an assistant to Ross Davis, Chairman of the Washington State Republican Party. Davis thought well of Bundy and described him as "smart, aggressive … and a believer in the system".[52]

https://en.wikipedia.org/wiki/Ted_Bundy

Dean Corll

>the statements Corll had given to both Henley and Brooks prior to his murder that he was associated with an organization based in Dallas that "bought and sold boys"[205] may indeed have held a degree of truth.

https://en.wikipedia.org/wiki/Dean_Corll

Andrew Cunanan

>Father, Modesto, worked for such elite firms as Merrill Lynch and Prudential Bache and was a follower of Elizabeth Clare Prophet, of the Montana-based Church Universal and Triumphant

https://en.wikipedia.org/wiki/Andrew_Cunanan

https://www.townandcountrymag.com/leisure/arts-and-culture/a19420548/andrew-cunanan-father-modesto-pete-cunanan/

Albert Fish

>Father was buried at the Congressional Cemetery

>The letter was delivered in an envelope that had a small hexagonal emblem with the letters "N.Y.P.C.B.A." representing "New York Private Chauffeur's Benevolent Association".

https://en.wikipedia.org/wiki/Albert_Fish