If you haven't read the His Fair Assassin trilogy, now is the time to start. All three books are out now and I couldn't recommend them enough, especially with Mortal Heart there to tie all three books together. 
 Like its predecessors, Mortal Heart deals with similar themes of love and death, ambition and sacrifice, hope and darkness. Annith finally gets to shine as she was a bit of a mystery in the first two books. Her character really impressed me. At first, I thought she was going to be a bit of a Mary Sue because she was known for being the Reverend Mother's favourite and just generally good and obedient. But oh wow how rebellious she turned, and I loved it! I loved watching her transition from a girl trying to please everyone to a strong, independent woman who, for the first time, puts her dreams and ambitions first and foremost. 
 The romance, though certainly different, had me swooning. I love everything about it. Balthazaar is broken and kind of lost, and as such, becomes a perfect fit with Annith who is the same. Their chemistry is off the charts but doesn't completely take over the political plot that ties the trilogy together. The romances in LaFevers stories are beautiful compliments to the central stories, adding love and hope to otherwise bleak and depressing times. 
 The His Fair Assassin is easily one of my favourite series ever and I'm beyond sad to see it go. It's beautiful, haunting, hopeful, bleak, and everything in between. As sad as I am, I can't wait to see what Robin LaFevers writes next as she has easily become and autobuy author.