A boring accountant is given a sealed letter by his mothers attorney. She's in her seventies and suddenly stricken with Alzheimer's she's been confined to a nursing home. As he reads the letter his mother confesses that she was the infamous Black Stiletto, a costumed vigilante famous in the late '50s and early '60s who battled Russian spies, the Mafia and stalked common crooks, rapists, killers and dirty politicians.