Fics like Capturing the Past

Having lost one family, Candace and Phineas' biological father returns to reconnect with his older children. When Candace isn't willing to oblige, Phineas isn't given the option of doing the same. Although the police are doing their best when both Phineas and Ferb go missing, Candace and the rest of the kids are determined to do some hunting of their own. Will they be able to find the boys in time?

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