Buried Alive (1990 TV film)

Buried Alive is a 1990 horror thriller television film directed by Frank Darabont. It stars Tim Matheson, Jennifer Jason Leigh, William Atherton and Hoyt Axton.

Unknown to Clint, Joanna has been having an affair with the local doctor Cortland van Owen. The lovers plot to kill Clint and sell his company and his house, then move to Beverly Hills to buy a clinic. Cortland gives poison to Joanna, which is taken from a rare poisonous tropical fish. She is hesitant at first to go along with the idea but changes her mind when they are having dinner she spikes Clints wine with the poison. Clint has a heart attack and dies. When the coroner asks if an autopsy should be done, Cortland refuses. While Clint is at the morgue he shows signs of life and just before he is to be embalmed, Joanna gives him a quick and cheap funeral instead, skipping the embalming process. Clint is put in a cheap waterdamaged coffin, varnished to look like new. After his funeral, Joanna and Cortland celebrate.During a stormy night, Clint, who has surprisingly survived the dosage, wakes up buried alive, and succeeds in escaping his grave. He goes to his house and finds the truth about his wife and the doctor. He hides himself downstairs in the basement to recuperate. The next morning, Joanna meets with a lawyer to discuss about selling his business for 1,500,000. Clint wakes up and plans to kill Joanna but when Cortland comes by to pay a visit he overhears that Joanna was pregnant and Cortland had conducted an abortion of his child behind his back, Clint changes his mind about shooting Joanna, believing it to be too easy, and after he cleans himself up and tends to his wounds, he plots a dark revenge against Joanna and Cortland. ........

Source: Wikipedia