The Stranger Within (1990 film)

The Stranger Within is a 1990 madefortelevision thriller film directed by Tom Holland, starring Rick Schroder and Kate Jackson which premiered on CBS on November 27, 1990.

One day, Mare takes Mark to the supermarket where the kidnapping took place, but faints. In the hospital, Mark finds out that Mare is pregnant and is surprised that she does not want him to tell Dan. Dan continues to seek evidence that will prove whether or not Mark is actually Luke, despite Mares confession that she does not want to know whether Marks story proves to be either true or false. At the police station, Dan finds out that the city in Idaho where Mark claims to have grown up Emerald City does not exist. Upset with Mark, Dan reluctantly saves his life when he almost falls off the roof. Mark then claims that Emerald City was a lie told to cover up his much worse past, and assures Dan of his credibility by showing him a birth mole that Luke also had. Shortly after, Mare rejects the latest of several marriage proposals from Dan, who has just found out through Mark about her pregnancy.During an ice fishing trip, Dan confronts Mark yet again about the lies about his past. Feeling trapped, Mark pushes Dan into the water and lets him drown to death under the ice. Mark then returns to the house and cuts the phone wire and electricity cable, as well as disabling the motor in Mares car, thus ensuring that Mare has no way to call for help and no other place to go. Mare is unaware of his responsibility in all these occurrences, though, and is further manipulated by Marks claim that Dan fell in the water due to his fight with her over their marriage views. A visit from a police officer changes her views on Mark, upon finding out that he did not inform the officer about Dans death. Mark turns the confrontation by insisting that she has been a horrible mother to him. The police officer, meanwhile, finds out that there are flaws to Marks claims. ........

Source: Wikipedia