Michael Dahl 
Crush Hour [PDF ebook] 

A young girl slides into the first-row seat of her school bus. The cool kids won’t let her sit in the back. But today, she’s glad to sit up front. Row by row, the seats in the back of the bus begin disappearing! Will her row be next? Bestselling author Michael Dahl (LIBRARY OF DOOM and IGOR’S LAB OF FEAR) takes young readers on the ride of their life in this addictively creepy series, SCHOOL BUS OF HORRORS!