A happy housewife named Marsha, hopelessly addicted to reading murder mysteries, overhears her loving husband discussing her upcoming birthday surprise with an interior decorator. To her ears, though, it sounds like they are planning to murder her With the assistance of her next-door neighbor, she tries to turn the tables on them with a poisoned potion. When her own mother shows up for her birthday a day early, Marsha thinks she is in on the diabolical scheme. When her maid's date, a p.