To save his career, an ad man wants a sex symbol to endorse a lipstick. But she wants something too: he has to pretend to be her new lover.

Burglar Nat Harbin (Dan Duryea) and his two associates set their sights on wealthy spiritualist Sister Sarah, who has inherited a fortune — including a renowned emerald necklace — from a Philadelphia financier. Using Nat’s female ward, Gladden (Jayne Mansfield), to pose as an admirer and case the mansion where the woman lives, they set up a perfect break-in. Things get complicated afterwards.

About the last two years of movie goddess Jayne Mansfield’s life and the speculation swirling around her untimely death being caused by a curse after her alleged romantic dalliance with Anton LaVey, head of the Church of Satan.