The Zodiac Killers Profile

The killer constantly changed his modus operandi but always consisted of him in black clothing, sending letters, targeting young, white couples and openly admitted that killing was more of a sport for him.

The attacks occurred at dusk or after dark, on weekends, around holidays, different weapons, and no motive except violence. He turned most of his rage toward females, and then their partners.

Going after couples may have shown that he was jealous because he did not have that kind of relationship.