Plot: Rescue young Gabriel from the vile fairy queen, and don't let her have Silver Borne, a magical artifact of great power, crafted centuries ago by Ariana, under duress. Bran plays a part in defeating the fairy queen, towards the end. Jessie, Adam's teenage daughter, also plays a key role in the rescue. 
 Relationships: Samuel is ready to give up on life, for he has no mate. He nearly commits suicide. His wolf is taking over. Mercy helps him stay in the game long enough for a lost love from his ancient past to appear. That relationship was initially built over troubled waters, but the old feelings run deep, so they work it out. Nice. I wanted more of this story line, but nice. 
 Meanwhile, Adam and Mercy are trying to develop mating bonds and pack bonds, but someone in the pack wants Mercy dead, and someone else wants Adam's position as Alpha. 
 Some lovemaking in this book. ;-) 
 Note: There are some rather revolting, gruesome scenes. No religious cussing, which I appreciate. The sex is not graphic.