内容简介：This chapter book in Newbery Honor–winning and bestselling author Louis Sachar’s Marvin Redpost series is all about daredevils and conquering your fears!Everyone says that Marvin is going to ride his new mountain bike down Suicide Hill. And everyone is coming to watch him do it—his friends, his family, even his older brother. But the truth is, Marvin can’t climb onto the seat without wobbling. And shifting gears? Braking? Forget about it! What’s Marvin going to do?