Rob Owen Season 2 of Netflix’s David Fincher series “Mindhunter” offers glimpses of several high-profile, real-life serial killers, including Charles Manson, played by Damon Herriman.It’s Herriman’s second time playing Manson, having also taken on the role of the infamous killer in “Once Upon a Time in Hollywood.”“It does make you question a few things about yourself,” chuckles Herriman about his twin turns as Manson. Herriman appears in the newest installment of Netflix’s FYSEE TV series