Quietest Day Ever

Perry's entrance to his lair
None.

Background Information

 * http://tvlistings.zap2it.com/tv/phineas-and-ferb-quitest-day-ever-doonkleberry-imperative/EP009488470271

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