My least favorite installment so far (including the 4th book which I've already read). 
 Thus begins the filler installments. The main plot pretty much ran itself out by book 2 but this is a good series, you can't end it at book 2! Enter random and fantastical plot lines. But it's ok. Bones and Kat are entertaining to read about no matter what. Even with all the Beverley Hill 90210 drama. 
 Onward and Upwards!