Before I move on from Rock Hudson, I decided to watch a piece of '70s schlock he starred in called Embryo which is included in Mill Creek's "Nightmare Worlds" set. Made in 1976, the film is about a scientist (played by Rock) who has developed an experimental hormone that accelerates the growth of fetuses outside the womb. His first experiment is on a dog he accidentally runs over one rainy night, but only one of its offspring survives. To Rock's delight, the pup's physical growth is matched by its learning capacity, but he is unaware that its aggression has also increased (illustrated by an unintentional hilarious scene where it viciously kills a small, yapping dog) when he decides to try again with a human fetus. This grows up to be Barbara Carrera in a matter of days and after a crash course in acting human he introduces her as his new research assistant. Charming as she is, though, she immediately raises alarm bells with Rock's nosy sister-in-law (Diane Ladd) and raises the hackles of special guest Roddy McDowall by nearly beating him at chess at a party. Seems she gets all of her knowledge out of books and has a photographic memory to boot, but there are many things she has never experienced firsthand.
One of those things is the act of procreation, which Carrera talks Rock into (shades of Splice), but almost immediately after they do the deed she starts getting severe stomachaches and things start going downhill fast from there. This development brings to mind the novel Flowers for Algernon and its 1968 film adaptation Charly -- which, like Embryo, was directed by Ralph Nelson -- but instead of her intellect going, Carrera's accelerated growth is retriggered and she takes drastic measures to try to preserve her own life. This leads to one of the silliest endings of any film I've ever seen, with Rock getting into a high-speed car chase with a rapidly aging Carrera, running her off the road, and futilely attempting to drown her. It was at this point that I was reminded of something he had said early on: "Failure is what keeps us geniuses from becoming too vain." Suffice it to say, by the time Embryo's credits roll, Rock the genius doesn't have much in the way of vanity left.