At Sword's Point, also known as Sons of the Three Musketeers, is a 1952 American historical action adventure film directed by Lewis Allen and starring Cornel Wilde and Maureen O'Hara.

The sons of Aramis, Porthos and D'Artagan and Claire, the daughter of Athos, are reunited by the aging Queen Anne to halt the villainy of her treacherous nephew, the Duc de Lavalle.

[2] The sons (and a daughter) of the original Four Musketeers ride to the rescue of besieged Queen Anne in 1648 France.

D'Artagnan and his companions are alerted that the terminally ill queen is being pressured by the evil Duc de Lavalle into agreeing to a marriage with Princess Henriette.

In 1947, Republic Pictures announced the purchase of the script Sons of the Musketeers by Aubrey Wisberg and Jack Pollexfen.