This is book 4 of the Eternal Flames Maddox series, you should read Eternal Flames 1-8 and book 1-3 of Eternal Flames Maddox before this book.
 
Timmy, a shy little gargoyle, has always felt like he isn't good enough. Wherever Timmy goes, disaster is sure to follow and his fellow gargoyle always pay the price. But one day, Timmy makes a big mistake by accidentally taking his king’s crown. So, Timmy runs away, afraid that his chimera will no longer want him. He also knows he must get the crown back to his King. So, Timmy hides it somewhere only he knows, but believes his king will find it.

Then Timmy makes the ultimate mistake of using his powers accidentally against his mate upon meeting him, turning York, the dragon shifter, into a stone statue. As Timmy grieves over harming his mate, the men of Crystal and Maddox need to come together to not only save York, but also themselves. Fallon, their biggest enemy, knows that the gargoyle king’s crown is hidden in Crystal, and if he can find it before they do, he will use it to destroy them all.