A crime spree in New York forces the police commissioner to turn to Englishman Simon Templar, who fights lawlessness and corruption through unorthodox methods. Templar sets his sights on individual crimes bosses, and after bringing down two vicious leaders through disguise and deception, discovers that there is a mastermind behind all the city's crime.

In the lower-middle-class Adams family, father and son are happy to work in a drugstore, but mother and daughter Alice try every possible social-climbing stratagem despite snubs and embarrassment. When Alice finally meets her dream man Arthur, mother nags father into a risky business venture and plans to impress Alice's beau with an "upscale" family dinner. Will the excruciating results drive Arthur away?

In the 1810s, an old maid poses as her own niece in order to teach her onetime beau a lesson.