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Phineas and Ferb
Season 1 · Episode 40
The Monster of Phineas-n-Ferbenstein
8.011mOctober 17, 2008
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.
Episodes
- Episode 1Rollercoaster
- Episode 2Lawn Gnome Beach Party of Terror
- Episode 3Flop Starz
- Episode 4The Fast and the Phineas
- Episode 5Lights, Candace, Action!
- Episode 6Raging Bully
- Episode 7Candace Loses Her Head
- Episode 8I, Brobot
- Episode 9Run Away Runway
- Episode 10The Magnificent Few
- Episode 11S'Winter
- Episode 12Jerk De Soleil
- Episode 13Are You My Mummy?
- Episode 14Ready For The Bettys
- Episode 15I Scream, You Scream
- Episode 16Toy to the World
- Episode 17Get That Bigfoot Outa My Face!
- Episode 18It's a Mud, Mud, Mud, Mud World
- Episode 19Mom's Birthday
- Episode 20Journey to the Center of Candace
- Episode 21It's About Time!
- Episode 22Dude, We're Getting the Band Back Together
- Episode 23Tree to Get Ready
- Episode 24The Ballad of Badbeard
- Episode 25Greece Lightning
- Episode 26Leave the Busting to Us
- Episode 27Crack That Whip
- Episode 28The Best Lazy Day Ever
- Episode 29Boyfriend From 27,000 B.C.
- Episode 30Voyage to the Bottom of Buford
- Episode 31A Hard Day's Knight
- Episode 32Traffic Cam Caper
- Episode 33Bowl-R-Rama Drama
- Episode 34Got Game?
- Episode 35Comet Kermilian
- Episode 36Put That Putter Away
- Episode 37Does This Duckbill Make Me Look Fat?
- Episode 38The Flying Fishmonger
- Episode 39One Good Scare Ought to Do It!
- Episode 40The Monster of Phineas-n-Ferbenstein
- Episode 41Oil on Candace
- Episode 42Out of Toon
- Episode 43Hail Doofania!
- Episode 44Out to Launch
- Episode 45Phineas and Ferb Get Busted
- Episode 46Unfair Science Fair
- Episode 47Unfair Science Fair Redux (Another Story)