The cockpit interior for the spaceship shows a large B-29-like windscreen, yet the rocket ship model shows no windows or portals of any kind.
In this episode the American space program is capable of sending a man into deep space, where he can time-warp back and forth 200 years into the future, but equip him with only with a conventional flight suit, and a .38 revolver.
In the climactic chase scene it would not be credible for Bertram and his companions to be firing rifles with his own fiance running alongside Andros.
Martin Landau's skill as an actor is on display with him being able to emote expressively through his massive monster makeup. On the other hand, his expert articulation and perfect white teeth do not correspond with the mutated creature he's supposed to be playing.