A new Peacock docuseries, 'Making Manson', unveils previously unheard prison phone calls of Charles Manson, where he admits involvement in additional murders prior to the infamous 1969 murders. Manson, who led the 'Manson Family' cult, is heard claiming he committed killings in Mexico during the 1960s, a revelation that adds to his notorious criminal history. The series explores Manson's life before forming the cult, highlighting his manipulative influence over his followers, who carried out murders on his behalf. Interviews with Manson's former associates and cellmate Phil Kaufman depict him as adept at concealing his malevolence. Despite his death in 2017, Manson’s legacy endures, with the docuseries shedding light on his early criminal activities and the psychological control he wielded over his cult members.