Phineas and Ferb S1 · EP40
The Monster of Phineas-n-Ferbenstein
7.9 · 2007 · Animation,Comedy,Family,Sci-Fi & Fantasy · ~11m
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.
