Emile Pulska is visiting his old friend Abe Stillman. During the visit they are attacked and Emile is struck senseless. When he wakes up he is told that Abe is dead, dead by natural causes, the doctors tell him. When Emile insists that they were attacked, his relatives try to give him psychiatric help. Emile decides to try to find the killers himself, but someone is watching his every step...

Chautauqua manager Walter Hale and his loyal business manager struggle to keep their traveling troupe together in small town America.

The Invaders, alien beings from a dying planet. Their destination: the Earth. Their purpose: to make it their world. David Vincent has seen them, for him it began one lost night on a lonely country road, looking for a shortcut that he never found. It began with a closed deserted diner, and a man too long without sleep to continue his journey. It began with the landing of a craft from another galaxy. Now, David Vincent knows that the Invaders are here, that they have taken human form. Somehow he must convince a disbelieving world that the nightmare has already begun.