Imani Lewis and Sarah Catherine Hook star as Calliope and Juliette in the new Netflix series 'First Kill,' a tale of forbidden love between a vampire and a monster slayer. ' In a shocking twist, Juliette, not Calliope, turns Theo into a vampire by accident in the series 'First Kill.' ' Juliette's first kill was not Calliope as intended, but rather Clayton Cook, after he...