Poorly written, directed and photographed, The Doomsday Machine is one of those cheap sci-fi farragos which rounds up several faded stars and then gives them nothing to work with. Among the trapped former luminaries are Denny Miller, Mala Powers, Bobby Van and Henry Wilcoxon. The plot (for lack of a better word) involves a spaceship and its squabbling crew. The space travellers must bury the hatchet long enough to try to save the Earth from destruction. Beware: That alluring videocassette on your local rental shelves titled Escape From Planet Earth is really Doomsday Machine in disguise.