Peabody Award winner Linda Moulton Howe and other experts explore the enigma of the colossal stone pyramids encircling our planet, both their purposes and the incomprehensible technology behind their creation.
| Actor | Role |
|---|---|
 Cybela ClareHerself - The host | Herself - The host |
 Linda Moulton HoweHerself | Herself |
 David ChildressHimself | Himself |
| RRichard C. HoaglandHimself | Himself |
 Semir OsmanagićHimself | Himself |
| AAlfred Lambremont WebbreHimself | Himself |
| SSébastien MartinHimself | Himself |