
An architect is convinced there are aliens in the world.

Vincent's college buddy expresses concern about peculiar experiments conducted by his brother at their sanitarium.

David Vincent (Roy Thinnes) sees a flying saucer land, but when he returns with police, they find only a honeymooning couple.

Vincent is accused of murder after aliens sabotage his plans to jam alien radio signals used to guide saucers to Earth.

A vicious dog convinces Vincent aliens are responsible for a friend's (Charles Aidman) recent institutionalization for insanity.