By Killing (Spanish: Orden de matar) is a 1965 Argentine film directed by Román Viñoly Barreto.
Police officer Mauro Moreno investigates the blind man's death, discovering he was an informant for Judge Zani.
Following a party, Nacho and Charlie rape and kill Clara, leading the media to demand action against crime.
The police trace El Sueco to Rosa's house, where Pascual, her recently released partner, is also present.
Intentionally provoking his own demise, Mauro allows Nacho, a drug addict, to steal his gun and subsequently kill him.