"The Son(s) of Sam"
One item that author Maury Terry's resolve to pursue his investigation, and eventually convinced Queens District Attorney John Santucci to re-open his case, was a letter which Berkowitz arranged for police to find upon his arrest. Terry saw it in 1981:
"This is a warning to all police agencies in the tri-state area: For your information, a satanic cult (devil worshippers and practitioners of witchcraft) that has been established for quite some time has been instructed by their high command (Satan) to begin to systematically kill and slaughter young girls or people of good health and clean blood.
''They plan to kill at least 100 young wemon [sic] and men, but mostly wemon [sic], as part of a satanic ritual which involves the shedding of the victim's blood....
"Warning: the streets shall be run with blood. I, David Berkowitz, have been chosen since birth, to be one of the executioners for the cult. . . ."