Mason defends the fiery and beautiful editor of women's lib magazine on a charge of murdering the publisher who gave her job to another woman.

Private detective Paul Drake goes undercover as a prison convict to help Perry Mason develop the evidence needed to prove that his client, a prisoner at the penitentiary, did not call one of the guards.

Chance meeting with beautiful young girl leads Mason to become her defense attorney when she's arrested for murdering the brother of an aging architect who's been committed to a mental institution.