| Blueprint for a Massacre | |
| Director: | Roberto Bianchi Montero |
| Cinematography: | Giuseppe La Torre |
Blueprint for a Massacre (it|Tecnica per un massacro, es|Técnica para un sabotaje or Agente Z 55: Secreto atómico), also known as Agent Z-55: Atomic Secret, is a 1967 Italian-Spanish Eurospy film co-written and directed by Roberto Bianchi Montero and starring Germán Cobos.[1]
The film was shot back to back with Desperate Mission, of which it is the sequel.[2] During the shooting, Nick Nostro replaced Montero for two weeks.