Mastermind's Mutants — David Michaels

A time-traveling super hero uses a magic crystal to open portals to other worlds, searching for a way to prevent a mind-controlling super villain from turning everyone on Earth into a mutant slave.

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It was an ordinary afternoon. Luke was at home, watching his favorite time travel movie -- when suddenly, there was a knock on the door. Who could that be?

His uncle, a well-traveled old man, had just come back from another country. And he brought with him a most special gift.

A magical pink glowing crystal.

A crystal that could open portals to other worlds halfway across the universe.

Meanwhile, trouble was afoot back on Earth. A mysterious man with the ability to control people's minds was on a mission. With the help of his wily, eccentric scientist friend and an experimental mutagenic chemical, he began transforming innocent victims into his half-human, half-animal mutant slaves.

But that was just the beginning.

While exploring another planet, Luke and his uncle discovered a mysterious giant pyramid. One made of a strange metallic substance. With a high-tech large doorway leading inside. Could this pyramid be of alien origin? They entered inside. And the mystery only grew deeper.

This sci-fi/fantasy adventure includes time travel, mind control, shape-shifting, and other fun super powers. Portals to other worlds. Mutants, monsters, and ancient alien mysteries that may have been shaping humanity since the dawn of time.

All with a villain, of course, who's determined to take over the world. Hey, that's what super villains are supposed to do, right? But Luke and his friends may just be the ones to stop him -- if they can find the solution in time.