This review and others can be found at http://www.bookishtreasures.blogspot.com *This review is for Sister Assassin, known in the US as Mind Games*I can hardly find the words to describe how awesome this book is! Unexpected, dark, haunting, kick-ass, amazing. All are words that work, but also don’t quite capture what makes the book as great as it is. Part of what made Sister Assassin so good is its uniqueness; it is just incomparable to any book already out there.Fia was an incredible character; I love strong characters but she was so much more than just that. Her perfect intuition makes her a perfect spy/thief/assassin; she will always walk the route with no guards and in a fight she will always duck at the perfect time. She is unbeatable. Because of this she is very valuable and unfortunately she has ended up in the wrong hands. She has no control over her life and is so horrified at the things she has been made to do that she is only just holding on to her sanity. Talk about a complex character!Annie is also very interesting. Powerful in her own right yet used as little more than a leash to keep her sister in line and under control. I loved the connection between these two. Annie has the sisterly urge to protect Fia yet she is the blind one, the less powerful one.Both the two main male characters in this book were such enigmas. James is one of the bad guys, yet at the same time he cares for Fia and appears to have some hidden motives. Adam seems to be sweet and caring yet at the same time he is a threat - to Annie, to Fia, and possibly to every girl with powers. This book almost felt like it was just an introduction for these two, but hopefully we will be seeing them a whole lot more in the next book.The story flickers between present time and flashbacks of the past – namely how Fia and Annie came to be in their current situation. Whilst this does have the possibility of confusing some readers, I found it a great way to gain understanding of what was going on. It kept the story mysterious and allowed the characters secrets to be revealed at the perfect times.From the very start this book drags you straight into the action. I love when books do this as I don’t like it when it feels like the author is just assuming you are an idiot who won’t understand anything so spends the entire first half of the book explaining the background. Whilst it is a little disorientating at first, the threads that create this masterfully woven storyline start to come together quickly and you can thoroughly enjoy and understand the action.Sister Assassin doesn’t have much romance and I found this to be a nice change from all other books that cram in romance no matter what. It does however have the potential for romance and I think this will probably be explored further in later books so fans of a little romance need not despair.In total this is simply an amazing book that should be read by all. If you like the sound of action, mystery and thrills mixed in with a tale about two fragile girls out of their depth in risk and danger then you will love Sister Assassin. I cannot wait to see what the author does with the next book in this series.*This book was recieved from the publisher via netgalley in exchange for an honest review, this has not affected my opinions in any way*