The Outer Limits - Season 2 Episode 3

Howard and Joanne Sharp are going to have a baby. Like many people in the near future, they are mulling over the possibility of black-market genetic enhancement. The upside is a perfect baby, able to compete with all those other perfect babies created by the popular, but illegal process. The downside is GRS - Genetic Rejection Syndrome - which turns one in every 10,000 genetically enhanced babies into a monster. The Sharps are willing to take the risk and go ahead with the procedure. Then they learn of the dark secret that their neighbors and best friends, Tony and Fran Blake, keep in the basement.