Fly On the Wall

Buford removes a part from a tire swing the boys are building and it accidentally shoots a ray that turns Candace into a fly. Meanwhile, Doofenshmirtz is suffering from evil scientist’s block.

Perry's entrance to his lair
None.

Continuity

 * This is the second episode to feature a character being turned into a fly. In "Picture This ", Buford accidentally got mixed with a fly in Phineas and Ferb's machine.
 * Seventh time Candace spends most of the episode after being changed by an invention.(Does This Duckbill Make Me Look Fat?, Attack of the 50 Foot Sister, Split Personality, Canderemy, Excaliferb, Doofapus).

Allusions

 * The Fly - Candace gets turned into a fly much like what happens to the main character in the story

Cast

 * Vincent Martella as Phineas
 * Ashley Tisdale as Candace
 * Thomas Sangster as Ferb
 * Caroline Rhea as Mom
 * Mitchel Musso as Jeremy
 * Dan Povenmire as Dr. Doofenshmirtz
 * Jeff "Swampy" Marsh as Major Monogram
 * Richard O'Brien as Dad
 * Dee Bradley Baker as Perry
 * Additional voices: