“The Face of Horror!”
A writer writes horrible tales featuring monsters. It's then revealed that the writer is a horrific monster himself.
“Violence”
This story follows a man and his lust for power and violence. He eventually becomes a powerful ruler crushing the helpless under his feet until he is finally defeated. That man was Adolf Hitler.
“The Missionaries”
In the 23rd century a group of missionaries from Earth go to Venus to help spread peace, but are shocked to find the cities have been abandoned with no sign of life. There is plant life everywhere. Suddenly the plants move towards the humans. They are ultimately overwhelmed and killed. It's then revealed that the plants are intelligent and are missionaries from their own world. They tried to bring peace to Venus but their extended vines (handshake) was mistaken for aggression and they were attacked. They were forced to kill the Venusians in self defence, just as they did to the humans.
“The Black Cat”
After a cheap hoodlum is saved by a stray cat, he adopts it. He then notices his luck changes for the good and begins winning large sums of money everytime he gambles. After he kills the cat in a drunken fit, he changes into a cat himself.