From the comments:
Click "Zaslavsky" above for some background from Binghamton.
For some background from Santa Mira, see…
The story takes place in the fictional Santa Mira, California
where Dr. Miles Bennell (Kevin McCarthy) is soon overrun
by several patients claiming that their loved ones are imposters.
Thus, a panic is set off as the doctor and his friend Jack Belicic
(King Donovan) try to find the answer to the issue at the hand.
What they discover is that somehow people have been replaced
by aliens, who are incubated in pea pods, from space.