I love reading Mary Calmes's shifter universes because the details are so well thought out. The first L'Ange story was mostly jackal shifters, but this one includes deer, lion, wolf, jackal, and something extra-specially ferocious. (Not giving it away!) And each group interacts with its own and with others in unique ways. It's these details which make reading her universes so special. 
 (I don't see a reason why her Change of Heart panther-shifter universe couldn't also fit into the set-up she's created in the L'Ange universe, to be honest. There's no need for them to merge, but I don't see why they couldn't either. Well, there are certainly fated mates in the CoH series.) 
 So, we have Arman de Soto, who is quite the over-protective overbearing predatory security chief of L'Ange. And he's been on a self-imposed mission for the last seven years because he knows something about Linus Hobbes's past. He is not a good man, but as Linus points out, he is the villian of someone else's story, but the hero of Linus's. 
 And we have Linus, a white deer shifter who is skittish and runs away from everything, except Arman. 
 We're told there's no such thing as fated mates, but these two certainly are uniquely drawn to each other (as is another pair, eventually - setup for book three, I assume). Why else would a predator and prey be drawn to each other? Sure, Arman would never hurt Linus because all he wants to do is protect him, but Linus has a past he needs to get over before he can be truly happy. And Arman's just the guy to help him out. 
 And as soon as Linus finally accepts what Arman has known for years, he changes like night and day, becoming the man he should have been all along. It's quite the transformation. (The similarity to Jin Rayne from Trusted Bond is not lost on me.) I really like these two together in the "you complete me" sort of way. 
 So, great universe and characters. I'm looking forward to book three!