Monster blood (goosebumps graphic novel #2)

while staying with his great-aunt kathryn, evan ross visits an eerie old toy store. among the dusty shelves, he finds a can of something called "monster blood." the odd, sticky substance really does look like the blood of a creature. it has a greenish glow and sometimes feels warm to the touch. but the most alarming thing about the toy ooze is the way it keeps growing -- overflowing its container, then a bathtub, then filling up a whole trash can. evan worries that all that growing has given the monster blood a monstrous appetite...