When the guardian priest of an abandoned church in Los Angeles dies, Father Loomis finds a diary and a key, opens the door of the basement and finds a cylinder with a gruesome green fluid. The priest contacts Professor Howard Birack in the local university and he invites a team of students to research the findings and translate manuscripts. The group discovers that the liquid is the essence of evil, actually Satan's remains, and has been kept locked in the church for centuries. Their research awakes the son of the Devil and when the student Susan Cabot gets close to the container, she drinks a jet of the green liquid, transforming in a living dead. Susan spreads the liquid among her friends, increasing the army of evil zombies. While the group is attacked inside the church by the zombies, derelicts surround the church trapping them inside, and Satan tries to bring his father to the world.

Screenwriter 'Carpenter, John' is credited as "Martin Quatermass". The pseudonym is a homage to Professor Bernard Quatermass, the lead character of "The Quatermass Experiment" (1953) and several subsequent TV series and film versions.

[Birack teaches a class on quantum physics]


Professor Edward Birack:
Let's talk about our beliefs, and what we can learn about them. We believe nature is solid, and time a constant. Matter has substance and time a direction. There is truth in flesh and the solid ground. The wind may be invisible, but it's real. Smoke, fire, water, light - they're different! Not as to stone or steel, but they're tangible. And we assume time is narrow because it is as a clock - one second is one second for everyone! Cause precedes effect - fruit rots, water flows downstream. We're born, we age, we die. The reverse NEVER happens... None of this is true! Say goodbye to classical reality, because our logic collapses on the subatomic level... into ghosts and shadows.

Continuity: We see the new moon very close to the sun (though showing far too much crescent for such a small angle). A few scenes later, Brian Marsh is looking at a full moon, then a few more scenes later, we see the new moon again near the sun. That night, we see the full moon again.

by Scott Bradley
Use courtesy of SBK Records Catalog Inc.