Glass is the second novel in the verse novel series Crank by Ellen Hopkins, published in hardcover in August 2007 and in softcover on April 7, 2009.

Like the previous novel in the series, Glass has been the subject of controversy, with the book being partially responsible for a public appearance by Hopkins getting cancelled due to parental complaints.

While at Robyn's house she meets a boy named Trey and starts to crave for people to look like they want or need her.

Once her father comes, he takes her to casinos for her eighteenth birthday party and they snort some lines while there.

After finding out that Robyn now works at a "whorehouse", Kristina goes over and is able to sell the girls ice, instead of street crank, which was the only meth they'd had access to.

After Trey comes home, she asks him why he hadn't been answering the phone and he responds with that he had been seeing a girl for sex only and that he still loved Kristina.

In 2007, Glass landed on Publishers Weekly's monthly list of the United States's 15 best-selling children's books from September to December.

"[6] Publishers Weekly also positively reviewed the book, saying "readers will be amazed at how quickly they work their way through this thick book—and by how much they learn about crystal meth and the toll it takes, both on addicts and their families.

"[7] In 2008, the American Library Association included Glass on their list of Quick Picks for Reluctant Young Adult Readers.

[8] Glass is included on the American Library Association's lists of the most frequently banned and challenged books in the United States.