* The Zodiac Unmasked:The Identity of the Zodiac Killer Revealed (2017)
* The Riddle of the Zodiac:The Zodiac Killer and the Unsolved Murders (2019)
* The Zodiac Killer's Letters:A comprehensive study (2019)
* The Zodiac Connection:Den sanne identiteten til Zodiac Killer og koblingen hans til Manson Family-mordene (2020)
Skjønnlitteratur
* The Scorpio Murders:En skremmende spenningsroman inspirert av Zodiac Killer (2018)
* The Zodiac Killer's Daughter:En psykologisk thriller (2019)
* The Zodiac's Revenge:En fartsfylt thriller (2020)