They were once some of the most advanced structures and facilities on the planet, standing at the cutting-edge of design and construction. Today they are abandoned, dangerous, some of them even deadly. From uninhabited cities to empty factories, these long-forgotten engineering marvels are scattered around the globe. Science Channel uncovers why some of the world's most advanced architectural achievements were eventually left behind in the all-new series Mysteries of the Abandoned.
Runtime: 60 minutes
Mysteries of the Abandoned - List of The Hardy Boys/Nancy Drew Mysteries episodes - Netflix
This is a list of episodes for The Hardy Boys/Nancy Drew Mysteries, a television series which aired for three seasons on ABC.
Mysteries of the Abandoned - Season 3 (1978–79) - Netflix
The series is retitled The Hardy Boys Mysteries for this season. All 10 episodes feature the Hardy Boys only, as the character of Nancy Drew is dropped.