The Swordsman, also known as Zapper's Blade of Veangeance, is a 1974 British action film directed by Lindsay Shonteff and starring Linda Marlowe, Alan Lake and Edina Ronay.

[3] Reynaud Duval runs a fencing school, and wanting to be his father's sole heir, forces him to write a false will and then murders him.

Duval's younger brother Karel hires detective Harriet Zapper and her Chinese side-kick Hock to investigate.

The Monthly Film Bulletin wrote: "The Swordsman is remarkable only for the relentless consistency with which it apes the style of the more overblown TV commercials.

Making pseudo-sophisticated hay of swashbuckling adventure, sub-Bond chicanery and the private eye thriller, the film is never more embarrassing than in its archly knowing references to other movies, from Bogart ... to Jane Russell.