[1] Friday's Child is one of several Heyer romances where the hero and heroine are married early in the novel, and the plot follows their path to mutual love and understanding.

The wild young Viscount Sheringham is fast running through his considerable income through gambling and other extravagant pursuits; and he cannot as yet touch the principal, unless he marries.

A lively quarrel then follows with his obnoxious widowed mother and her brother, who wish to retain control of his father's fortune themselves.

This turns out to be the pretty but orphaned and shy Hero Wantage, who has secretly loved him since they were children, and who now lives with one of his neighbours in the position of Cinderella, complete with Ugly Sisters.

The rest of the novel, chronicling the Viscount's gradual transition to maturity and the realisation that the one he really loves is Hero (the "loving and giving" child of the title), is told with Miss Heyer's characteristic wit, and features some of her most memorable dialogue, plot twists and characters (such as the fiery but lovelorn George Wrotham, whose hobby is fighting duels).