Finley is still struggling to bring both sides of her personality together but she has come a long way from who she was in the first book thanks to Griff and the others. She is still incredibly independent, intelligent and more than capable of looking out for herself which is something that has to be admired but she does have a tendency to act without thinking through the full consequences which often gets her in trouble. Griff struggles with the fact that Finley is often more capable of protecting herself than he is of looking after her but as much as that grates on him he puts that to one side once he has time to think about things. I have to say that Griff has grown on me since the first book but I did miss Finley's other potential love interest Jack in this instalment. It's not often I'm interested in love triangles but with the two distinct sides to Finley's personality it's not surprising that she is attracted to both of these very different men. I always tend to have a thing for the bad guy so it wasn't much of a surprise to me that I previously found Jack the more appealing of the two but after reading this book I'm now split down the middle and I'm almost tempted to switch to team Griff. 
 It was great to catch up with Emily and discover her latest impressive inventions, she is the smartest one of the group by far and she always has a few tricks up her sleeve. Sam has had quite a change of attitude which he desperately needed and he and Finley have almost reached a point where they could consider each other friends rather than enemies. This story takes us away from London and across the pond to New York and Jasper's old hunting grounds. Jasper is in a mess, his old gang have caught up with him and they are using blackmail to get their hands on a weapon he stole and hid from them before he fled to London. Finley, Griff and the others can't leave their friend to deal with the mess on his own and they have followed him to America to assist in any way they can. I always loved Jasper so it was great to spend more time with him and to get to know more about his past. I have to admit I wasn't a huge fan of his ex-girlfriend Mei but I absolutely loved his old friend Wildcat and really hope we get to see more of her in the future.