Lab of the Lost is the third part of the 6th episode in the second season of Dexter's Laboratory, which first aired on August 20, 1997. In this episode, Dexter lands in the abandoned part of the lab after a mishap. There, the boy genius finds many of his neglected inventions.
The episode's name is a parody of the classic 1970s TV series Land of the Lost which was about two children and their father becoming lost in a strange world inhabited by dinosaurs and other lost and strange creatures.
This is the third out of four segments to feature Allison Moore as the voice of Dee Dee in season two instead of Kat Cressida.