A scientist doing experiments on a human fetus discovers a method to accelerate the fetus into a mature adult in just a few days. However, the "adult" fetus turns into a homicidal psycho and looks for a new formula to prevent her from aging further.
Embryo
A scientist (Rock Hudson) doing experiments on a human fetus discovers a method to accelerate the fetus into a mature adult in just a few days. All is not well though as the child begins to exhibit some horrific tendencies.