Astronomers discover a comet that they believe will crash into Phoenix, Arizona. They attempt to warn officials, but without 100% certainty, the governor of Arizona is reticent to cause a panic. Even after a television news reporter discovers the truth and threatens to go live with it, the response is understated enough to doom some residents of Phoenix to certain death.

• Bill Driskill Productions
• Columbia Pictures Television
• Richard Crenna
• Elizabeth Ashley
• David Dukes
• Joanna Miles
• Lloyd Bochner
• Merlin Olsen
• Andrew Duggan
• Maggie Wellman