Where To Stream Phineas and Ferb Season 1 Episode 40
The Monster of Phineas n Ferbenstein
- Aired October 17, 2008
- 15 Min
- Rated 8.5
- Number 75 Of 247 Rated Episodes
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.