Wow. Non Pratt delivered a book that honestly and frankly deals with the subject of teen pregnancy. (Ha--delivered.) Hannah is fifteen and a bit of a ditz. (She's not dumb or anything, just a bit of an airy fifteen-year-old girl at times.) Aaron is new to the school and doesn't really care about the popular status that has suddenly been afforded to him. When Hannah gets pregnant, Aaron agrees to pretend to be the father. Hannah knows the identity of the father, but she isn't quite ready to reveal that. Aaron has a secret he's harboring, too. Hannah and Aaron both need a good friend--and that's what they find in each other. 
 Trouble is not coy or shy about the realities of teen sexuality. It doesn't endorse or glamorize it, although your mileage may vary. Pratt takes care to show a host of reactions (from friends to Hannah's parents to nurses to Hannah herself) in the discussion of what to do about the baby. The book alternates between Hannah and Aaron. Hannah's chapters are written lightly, although they deepen as she grows up. Aaron's chapters are contemplative and sometimes moody. Both of the teens feel and act like real teenagers, especially real teenagers that have to deal with stuff that is beyond their level. A subplot featuring Aaron's elderly friend only occasionally hits the mark. The story takes the reader through an entire academic term and an entire prenatal term. There were moments when the plot got too heavy or dramatic (usually necessitated), although Pratt was wise about course-correcting when that happened. I didn't always love the experience of reading this, but I loved the book as a whole. Hannah and Aaron can proudly join the ranks of stand-out YA characters.