Vincent is accused of murder after an explosion kills a senator seconds after he delivered a warning about an alien's presence.

A lovely alien (Suzanne Pleshette) seeks Vincent's help in controlling synthetic emotions implanted in her by alien scientists.

Two alien fugitives (Barry Morse, Diana Muldaur) contact Vincent to ask for his help in stopping the invasion of Earth.

A young woman (Barbara Hershey) witnessing an alien incineration at a religious shrine believes she had a miraculous vision.

Vincent has only 24 hours to prove a man recommended for appointment to an important post in the space program is an alien.

A high-ranking general (James Daly) asks Vincent to arrange a meeting with alien leaders to discuss peaceful coexistence.

Vincent learns crime syndicate members are searching for extraterrestrials to recover a shipment of stolen narcotics.

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

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

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