When a movie has Vincent Price, Clu Gulager, and Rosalind Cash, you don't need to do much deliberating. Just rent the damn thing. That's what I did.
Then I groaned when I realized it was an anthology film.
These stories mostly adhere to the EC comics' rule: something terrible must happen to an innocent person, and by the end the instigator must get what they deserve, usually in some grand, ironic manner. It's a classic type of horror story, but there's not much room for suspense. From a Whisper to a Scream tries to deviate from the pattern every once and a while, but when it does the outcome just seems needlessly cruel.
In the first story, Clu Gulager plays the part of a hallucinogenic old man who falls for an uninterested younger woman. In the second story, a gunshot victim played by Terry Kiser (Bernie from Weekend at Bernie's) ends up betraying the swamp-dwelling man who nursed him back to help. The third story is about a woman who falls in love with a glass-eating circus freak who's bound by voodoo to remain in the carnival for the rest of his life. Pretty standard stuff.
In it, the insanely prolific actor Cameron Mitchell plays a Union sergeant who doesn't mind gunning down Confederates (or his own soldiers) even after he's learned the war's ended. He and his group of asshole soldiers end up captive in a town run by children. It's later explained—and this is kind of spoilerish—that the children's parents were massacred in the war so the kids decided to keep running things themselves and avenging their parents along the way. And when the children reveal the oft-discussed "magistrate" towards the end of the picture, it's wonderfully bizarre.