Pit of Peril - S1-E2
Revealing mistake: When Scott has retrieved Virgil from the Pit using The Mole, when it reverses back onto its chassis above ground, you can see dust flying upwards from the ground. It is therefore obvious that this is footage played backwards. (00:39:05)
Pit of Peril - S1-E2
Revealing mistake: When the four US Army members are talking outside the US Army helicopter discussing the Sidewinder situation, there is a man in the helicopter who is someone else and not Helijet Pilot Charlie.