Phineas and Ferb S1E40 backdrop
Phineas and Ferb poster

Phineas and Ferb (2007)

S1E40 The Monster of Phineas-n-Ferbenstein

Oct 17, 2008 Season 1 Episode 40 Animation, Comedy, Family, Sci-Fi & Fantasy

The boys discover that one of Ferb's ancestors from the Victorian era played a key role in helping a scientist bring a monster to life. At the same time, Doofenshmirtz reminisces about his great-great-grandfather, Dr. Jekyll Doofenshmirtz, sharing the tale of his unique legacy.

Previous S1E39
All Episodes
Next S1E41