Evan can't stand babysitting his genius cousin, Kermit. Kermit refuses to play video games. He won't even play Frisbee! All likes to do is hang out in the basement performing strange experiments and playing mean practical jokes on Evan and his friend Andy.But now Andy's found something that will teach Kermit a lesson once and for all.It's green. It's slimy. And it comes in a can marked...Monster Blood!

Evan Ross can't forget about Monster Blood-the evil green slime that never stops growing. It can turn ordinary pets into ferocious animals and twelve-year-old kids into freakish giants.But now there's a new kind of Monster Blood in town. It comes in a can just like the others. Only difference is this slime is blue instead of green. And instead of just growing, it's multiplying-into terrifying blue creatures with razor-sharp teeth...

Soon after he purchases a dusty can of monster blood at the funky old toy store near his great-aunt's house, Evan begins to notice some strange things happening to the people around him.

Evan has found something that will teach his genius cousin Kermit a lesson--Monster Blood!

In this spinoff to the New York Times–bestselling Goosebumps series, a tween is given monster blood, a mysterious serum that gives him strange powers. For an athlete like Matt Daniels, breakfast is the most important meal of the day. It’s also the most dangerous. That’s because somebody pulls a mean prank and adds gooey, green Monster blood to his cereal bowl. As if Matt’s problems weren’t big and slimy enough, he gets an invitation to HorrorLand. Can the Monster Blood help him in the terrifying theme park? Matt really begins to wonder once his friends start disappearing!

Evan Ross can't stop thinking about Monster Blood and what happened last summer. It was so horrible. So terrifying. Too bad Evan's science teacher doesn't believe him. Now he's stuck cleaning out the hamster's cage as punishment for making up stories.Then Evan's friend Andy comes to town, and things go from bad to worse. Because Andy's got a present for Evan. It's green and slimy and its starting to grow...

Disgusted by his bratty kid sister's demand for an egg hunt as part of a birthday celebration, Dana Johnson is amazed when he finds a football-sized, purple-veined egg that hatches a terrifying surprise.