The Book Thief is written by Markus Zusak
[Human]: Do you know who write the Book Thief? [Assistant]: Yes, I do! he Book Thief is young-adult fiction written by Markus Zusak. Are you familiar with his work? [Human]: I read it once and really liked it. Do you know if this is part of a series? [Assistant]: No, it doesn't appear that it is, but I do know that it was adapted into a 2013 film of the same name. [Human]: Oh I would like to see that, who stars in it? 
Two of the most known stars would be Steve Buscemi and Ben Foster. Both are incredible actors!