Prince of Darkness
The essence of Satan leaks out of its container, and "gestates" to maturity within Kelly (Susan Blanchard). Catherine (Lisa Blount) sees Kelly pulling Satan's father into our universe through a mirror, and hits her with a flying tackle that forces all of them back into the alternate dimension; Father Loomis (Donald Pleasence) then destroys the portal/mirror. The survivors go home, confident that Satan has been defeated. Later, Brian (Jameson Parker) gets another tachyon dream-message from 12 years in the future, but it's changed, and now shows Catherine as the harbinger of the apocalypse.
(Links open in new window)
Read more about this film at The Internet Movie Database.
Buy it on VHS or DVD at Amazon.com.
Buy this poster at moviegoods.com