During a dinner party at the Brookfield family estate, private detective Craig Kennedy relates a story of one of his unsolved murder cases. What Kennedy knows, and the other guests do not, is that the person who was the killer in the unsolved mystery is in the room, and Kennedy makes plans to expose him.
Offering a ride to a millionaire, Sam Smith (Leon Errol) agrees to trade places with his passenger for financial reasons. Only when the men in the white coats put the collar on him does Sam realize that the "millionaire" was actually an escaped mental patient.
After being disinherited by their wealthy father for their wild and irresponsible ways, two brothers embark on vastly different paths. One turns to crime and the other follows the straight and narrow falling in love along the way. When their paths cross again both find their lives in danger and only one will emerge safely.
Boardinghouse servant Adele Clark is unexpectedly awarded the ownership of a certain piece of New York City property known as Clark's Field. The trustees send her to a finishing school, whose headmistress, Signorina Vitale, persuades Adele and her sweetheart, Tim Sullivan, that she should travel in Europe. Adele's new riches cause her to lose her sense of proportion, and she soon is involved with a fast set indulging in the jazz life. Even Tim cannot curb Adele's extravagance, and he returns to America while Adele marries Italian fortune-hunter Prince Arnolfo Da Pescia. When a will is discovered naming Tim as the rightful heir to Clark's Field, Adele and Arnolfo hurry to New York, and Arnolfo tries to steal the will, then dies in a hotel fire.
Three men in London compete for the love of a dance-hall girl.
Andrew Sheldon is so busy perfecting a new explosive for the United States effort in World War I that he fails to realize that his butler, cook, housekeeper and chauffeur are all German spies. His two mischievous daughters, Jane and Katherine, however, make life difficult for the spies by throwing pies at the Kaiser's picture and clipping the butler's long, Prussian-style mustache while he sleeps. When Andrew's wife announces that she is pregnant, he tells the girls that he has written a letter requesting a baby brother for them, whereupon they decide to steal the letter, convinced that two children are enough for their family. Breaking into Andrew's laboratory, they take the "letter," actually the secret formula, but after Andrew reveals that his plans are missing, the butler enters the laboratory and seizes the invention itself.
Arnold Maitland is devastated when he finds out that his wife Cynthia is having an affair with a man named Boresky. He falls in love with Flora Farnsworth, a cabaret dancer, and sets out to divorce his wife and marry Flora. Unfortunately, Arnold is killed in an accident, and Flora turns for comfort to his business partner Philip Standish, and soon falls for him. Enter Cynthia, who has tired of Boresky and wants Philip for herself. She hatches a plan that will get rid of both Flora and Boresky and leave Philip for her.
Madge Kennedy stars as a young woman of modest means, posing as a millionairess in order to attend a hoity-toity society ball, where she hopes to snare a rich husband. Here she meets handsome young Tom Moore, who is likewise impersonating a man of wealth.
Though her father forbids her to marry Jack Harvey, a poor young artist, Molly Wilson becomes his wife and goes away with him to another town. Bessie, the eldest daughter, an attractive widow with two baby boys and a baby girl, pleads with her father in Molly's behalf, but he is obdurate.