Broadway showgirl Evelyn Nesbit (Joan Collins) is the object of affection of two men: playboy architect Stanford White (Ray Milland) and wealthy but unstable Harry Thaw (Farley Granger). She marries Thaw, but White’s continued pursuit puts him in the path of Thaw’s volatile temper. Inspired by true events that occurred at the turn of the 20th century.

Ellen McNulty leaves her New Jersey hamburger stand and heads west to pay a surprise visit to her son and his new bride. When Ellen arrives, her daughter-in-law mistakes her for the maid she has hired for a big party they are throwing. Rather than cause any embarrassment, Ellen goes along with the charade, which leads to many complications.