Phineas and Ferb S1E40 poster

Watch Phineas and Ferb – Season 1 Episode 40: The Monster of Phineas-n-Ferbenstein

Phineas and Ferb • Season 1, Episode 40 • 11 min • 2007 • ⭐ 7.9/10 • Animation , Comedy , Family , Sci-Fi & Fantasy

Cast: Dee Bradley Baker , Vincent Martella , David Errigo Jr. , Ashley Tisdale , Caroline Rhea , Alyson Stoner , Dan Povenmire , Jeff 'Swampy' Marsh

Directors: Dan Povenmire , Jeff 'Swampy' Marsh

Watch Phineas and Ferb – S1E40

Episode Overview

The boys learn about one of Ferb's Victorian ancestors, who helped a scientist create a monster. Meanwhile, Doofenshmirtz recalls the story of his great-great-grandfather Dr. Jekyll Doofenshmirtz.

Episode Navigation

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