Phineas And Ferb: Season 3, Episode 48

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Agent P's fate is finally revealed in the action-packed finale of the two-part television special that left Phineas, Ferb and the gang hanging -- literally -- off an unchartered gorge and Candace frantic over a phone call with Jeremy that left their relationship status in limbo. Now, with Agent P nowhere in sight, Dr. Doofenshmirtz and Major Monogram square off against evil Carl who controls a set of Flynn-Fletcher robots to take over the OWCA, in one of the biggest battles yet.