I have no problems when shifters are involved in a book. Actually, I enjoy them most of the time. So when i saw that grayson was a white tiger, i liked it and was intrigued because it was original. But then maybe the story was just too original for me to truly like ? I don't know... The world created was just kind of confusing ad you don't have much time to adapt.
And yes, there were lots of sex (maybe a little too much). At first it was hot and steamy scenes I was looking forward to read, but then it was just weird and ridiculous when they were in the lab. So yeah, not my best read ever but maybe the story in the next installment gets better? I'm not sure if I am curious enough to check it out.