I love thriller books as a whole by far my favorite genre, this book was one that had me on my toes. I love the detail to characters as this kept me on track with it being a can't put it down page turner. I have a read a couple other books from Wendy Corsi Staub and she never ceases to astonish me with her witty tales, and interesting twists. Shadowkiller will have you wondering what will happen to main character Allison as her past has a way of bringing its self back to light. I can't right too much without wanting to give the story away so I recommend anyone who loves this particular style of writing that they must go out and read this.