Torn between a four and a five. I went with a four because of some ending aspects. I told myself I'd take a break from YA (which I did) because I was so sick of the many YA books out there that dub down their writing and are just plain insulting and boring. Granted I've read quite a few YA books that I loved but I was getting sick of feeling like the authors were holding back just because the audience was YA. I missed adult novels that went into more depth, grit and detail in their writing. But I will say I'm glad I picked this one up. 
 When this book came into the library the cover and title screamed "Aubrey, read me, read me!" If you don't already know I'm one morbid girl, so they say, because I find anything to do with serial killers fascinating, gripping, and all too much of a mystery. I can't wrap my head around what goes into theirs, so I read more and more of it. 
 I finally picked up this book because of the catch line at the top of the cover: 
 "What if the world's most notorious serial killer...was your dad?" 
 I immediately thought of Dan Wells and his John Cleaver series, beginning with "I am not a serial killer," which I just devoured. It was about a young boy, though that book was adult whereas this one is YA, who works in a morgue and is fighting his serial killer type thoughts and instead ends up hunting them, while still fighting his own demons. 
 This one was similar in that the main character is a young boy and he is fighting similar urges, mainly because most of society expects him to end up like his "DEAR OLD DAD." For the main character, Jazz (short for Jasper), witnessed much too much growing up. For his dad, before being locked up, embraced the "bring your son to work day motto" and so Jazz recalled each and every one of his father's victims, which was in the triple digits. That is why the epitome of this book addresses nature versus nurture questions, would someone raised this way turn out that way? 
 Sometimes the book reminded me too much of Dan Wells' book I Am Not A Serial KillerI Am Not A Serial Killer but is was original enough for me not to complain. It was a page turner for me at the very least. I appreciated the humor aspect thrown in the book, as well, particularly with Gramma. It was a nice balance to such a gruesome subject. I loved the characters and I must add, I think the names were very carefully chosen and fit each character, as well as the genre. The book had me guessing. Once or twice I guessed right but the fact that it still had me guessing to the end was enough for me. I can't tell from the ending if there will be a sequel but it sure seems that way. If there is I WILL read it. In fact this book has made me want to look into Lyga's other writings. Fun, gritty, funny, suspenseful, addicting...all around great book!I Am Not A Serial Killer The only complaints I have are in the ending (view spoiler)[ regarding who the serial killer is because that wasn't really addressed, how his friends just busted in with a gun because the cop posted wasn't paying attention- that seemed too easy and I mean just because the cop wasn't paying attention why would you feel the need to grab a gun, and a couple other minor things (hide spoiler)] but overall was a fun read!