Watch Series: First Blood Released in (2022) - Season 1 produced by USA, The TV Series categorized in Crime, Documentary, with duration 43 min broadcasted as these networks A&E, Streamed at Putlocker “First Blood\" examines some of America’s most notorious serial killers through the prism of their first known kills to reveal what drove them to the moment when violent fantasy and curiosity became a devastating reality. - Season 1