"She hasn't hurt anyone... yet" 
 Where do I begin? From page 1 to 398 I was hooked and devouring every page with an intense obsession. Saying I was on the edge of my seat would be an understatement, by the middle of the book I was on the floor trying to find air. 
 'My Sister Rosa' is a psychological, thriller by Australian YA author Justine Larbalestier. It follows the story of seventeen year old Che Taylor and his journey to New York City after his parents and their family friends have been given a business opportunity. Only there's one problem: he wants to spar (not just train), he wants a girlfriend, he wants to go home to Sydney and wants to keep Rosa under control. Che's little sister, Rosa plays a vital role in this mind boggling loophole, she's smart, talented, pretty and- a psychopath. A large majority of the plot revolves around Che's speculation and theory that his sister is capable of hurting those around her (both emotionally and physically). 
 This was my first book by Justine and I honestly can't praise it enough, the writing style was easy to read and captivating - as it was written by an Australian author, the book also had an array of Australian slang/jargon that made me laugh and cry (if you're looking for a good introduction into Aussie YA, this book supplies the goods). The characters were all so well rounded and believable. I was so impressed with Justine's portrayal and representation of Che (whilst she is a female author, the attitudes and characteristics of Che I felt were very fair and honest). Rosa, gave me the right amount of chills and shivers, she genuinely terrified me and made me sceptical throughout the entire book. The setting was wonderfully brought to life, I've never been to New York City but could vividly imagine the skyscrapers and city parks through Larbalestier's writing style. 
 This book has a great balance of tension, suspense, happy moments, sad moments and moments that will make you laugh so hard you'll end up crying. 
 The tag line seen above, is what allured me into buying this book and boy did it impress me. The PLOT TWIST AT THE END. Holy crap. It was mind twisting and manipulative (in a good way) I JUST WOW. It was executed perfectly and I can't even express how speechless I am at HOW EVERYTHING CONCLUDED JUST WOW HOLY CRAP. 
 Highly recommend for those who want to get into more Aussie YA or those who want a good, gripping thriller LIKE HOLY CRAP READ THIS.