The Fifth Commandment (2012)

Víctor, a disturbed psychopath, obsessively carves crosses into his victims after their death. Haunted by a past shaped by a pedophile priest and a mother who turned a blind eye, he shifts when he unexpectedly falls for a woman he intended to murder, prompting him to abandon his dark path. Meanwhile, a grief-stricken, alcoholic detective, still mourning his sister's death, is on Víctor's trail. In an intriguing turn of events, the detective not only tracks Víctor but also conquers his own struggle with alcohol, finding redemption in the process.