Screenwriter George Bruce, a specialist with swashbuckling tales, is at his best in this rather loose adaptation of the fanciful Alexandre Dumas novel that relates how the Three Musketeers won their final battle. The scenario tells of the birth of twin sons to King Louis XIII of France and his wife, and of how, since there can be but one dauphin, the latterly born is secretly given to the care of the King's favorite swordsman D'Artagnan who, along with the Musketeers, raises him in Gascony. The return to Paris of the untitled and untravelled son, Philip, along with the four veteran warriors, at the request of Minister Colbert, one of the few who is aware of the twin birth, and the resulting adventures largely brought about by a sharp contrast in humanity between the brothers, forms the basis for the subsequent fast-moving and exciting events. Louis Hayward brilliantly plays the dual parts of the twins King Louis XIV and the unrecognized Philip, providing a proper degree of personality disparity, along with a display of excellent fencing skill and a robust penchant for romancing the Infanta of Spain, nicely performed by Joan Bennett. Walter Kingsford and Joseph Schildkraut are sterling as ministers in competition for the King's ear, as are Albert Dekker and Doris Kenyon as Louis XIII and his queen, but it is Warren William, whose profile puts that of John Barrymore to shame, who steals the supporting cast honors with a very strong performance as D'Artagnan. James Whale's flamboyant style of direction is perfect for this cinematic transposition of the classic novel, and the editing is well-nigh perfect, capping a delightful performance by all.