Toothsome Tracy Reed (remember her in Dr. Strangelove and A Shot in the Dark?) heads the cast of Deadly Females. The ladies in question are female assassins, specializing in knocking off lascivious males. Like the proverbial black widow spider, the girls lure their victims with promises of sexual favors, then strike when said victims are exhausted. Naturally, this requires plenty of exposed female flesh.
A quiet and inconspicuous man (Trelkovsky) rents an apartment in France where the previous tenant committed suicide, and begins to suspect his landlord and neighbors are trying to subtly change him into the last tenant so that he too will kill himself.
In Madrid, the orphan sisters Irene, Ana and Maite are raised by their austere aunt Paulina together with their mute and crippled grandmother after the death of their mother and their military father Anselmo.
Bored and restless, Alice spends much of her time lusting after Jim, a local sawmill worker. When not lusting after him, Alice fills the hours with such pursuits as writing her name on a mirror with vaginal secretions and wandering the fields with her underwear around her ankles.