After Baretta busts a small time numbers racket his girlfriend is shot and killed. He looks to come up with a plan that will allow him to seek revenge while making sure he stays on the right side of the law.

After Baretta's childhood friend Eddie is killed, he takes on the obligation of a pregnant widow who is addicted to smack. He "kidnaps" her in an attempt to wean her off drugs to prevent the baby's being born addicted as well. His CI helps Baretta get justice.

Baretta's best friend, a parole officer, is murdered after telling Baretta that a model who supposedly killed herself months earlier is alive and well in Mexico.