"I knew she'd be trouble."So quipped Antonin Scalia about Sonia Sotomayor at the Supreme Court's annual end-of-term party in 2010. It's usually the sort of event one would expect from such a grand institution, with gentle parodies of the justices performed by their law clerks, but this year Sotomayor decided to shake it up--flooding the room with salsa music and coaxing her fellow justices to dance. It was little surprise in 2009 that President Barack Obama nominated a Hispanic judge to replace the retiring justice David Souter. The fact that there had never been a nominee to the nation's highest court from the nation's fastest growing minority had long been apparent. So the time was ripe--but how did it come to be Sonia Sotomayor? In Breaking In: The Rise of Sonia Sotomayor and the Politics of Justice, the veteran journalist Joan Biskupic answers that question.