Goosebumps: Invasion of the Body Squeezer Part 2 - R. L. Stine

There’s an alien in Jack Archer’s bedroom and he’s not sure what to do. He’s tried to warn his parents, teachers, and friends about the invasion, but everyone has just laughed him off.

But the huge, ugly space creature is no laughing matter. It's determined to squeeze the life out of him -- and then do the same to everyone on planet Earth!