This is quite interesting. Fred Savage (late of "The Wonder Years") shows up at his parent's house for dinner along with a beautiful young woman who he is quite interested in. When his father spots the woman, he is utterly distracted. He knows this woman, but his last contact with him was in Vietnam where he guarded a medical installation. This young woman was strapped down and was apparently being abused by what appears to be a doctor and his associate. She is screaming for help and when the two medical men leave, he goes in and assists her. The "doctor" comes back and pulls a gun on the young MP, but, in the process, fires his gun, causing a huge explosion. The weird thing is that this woman has not aged a day in twenty years. Meanwhile, because of the father's weird behavior, tension builds. At the same time, the evil man has gotten wind of the survival of the woman he was assaulting and heads toward the family home. She talks to the husband and tells him that she is indeed the same woman and has been alive for centuries. They had a sexual encounter just that one time and he has been carrying around all that guilt. He asks to see a birthmark but the son bursts in and things get really complicated. Things come to a head. I guess if one is willing to accept her story, we can buy this. The ending made me say, "What." Things fizzle a bit at that point and it was almost laughable.