The Black Pit of Dr. M

When Dr. Jacinto Aldama is near death on his bed, Dr. Mazali demands him about their pact to return from beyond to tell how the afterlife is. Soon Dr. Mazali has a seance with Dr. Gonzalez, and Dr. Aldama comes and tells him that three months later, there will be a closed door at 9;00 PM that will show him the afterlife and them he will return in flesh, but he will be punished. Meanwhile, the performer Patricia Aldama is visited by a mysterious man that tells her that she has a key that must be delivered to Dr. Mazali and receive an inheritance from her father. When she arrives at the sanatorium, Dr. Mazali is treating a violent gypsy woman that throws acid on the face of the nurse Elmer that is deformed. While waiting for Dr. Mazali, Pat meets the newly graduated doctor Dr. Eduardo Jimenez that will work in the mental institution. Soon the scheduled day comes, deeply affecting the life of Dr. Manzi.