In Greek mythology, Hercules and his plucky nephew Iolaus kill the Lernean Hydra—a massive serpent with nine regrowing heads—by bashing and burning eight of its domes and then slicing off the ninth.

Dwayne Johnson's Hercules faces his second labour - the four-headed Lernean Hydra - in a new clip from the action blockbuster. Hercules, directed by Brett Ratner, is based on the comic book by Steve ...

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