A SKRULL Walks AMONG US!
Wanting revenge on the Fantastic Four for foiling their invasion of the Earth, the Skrulls build a device that allows one of their own to mimic all the powers of the Fantastic Four. Sending the Super-Skrull to Earth, he battles the Fantastic Four all across New York City, until Reed realizes that the Super-Skrull gets his powers from a beam sent to Earth from the Skrull homeworld.
Building a device to block this power, Reed has his comrades take their fight with the Super-Skrull to a mountain with a cavernous peak. There Reed activates the power-blocking device depowering the Super-Skrull, the Human Torch then seals the Skrull inside the cavern.