Made to Be Broken by Kelley Armstrong

The author of the acclaimed Women of the Otherworld series returns with her latest novel featuring an exciting heroine with a lethal hidden talent. This time she's hot on the trail of a young woman no one else cares about--and a killer who's bound to strike again.
Nadia Stafford isn't your typical nature lodge owner. An ex-cop with a legal code all her own, she's known only as "Dee" to her current employer: a New York crime family that pays her handsomely to bump off traitors. But when Nadia discovers that a troubled teenage employee and her baby have vanished in the Canadian woods, the memory of a past loss comes back with a vengeance and her old instincts go into overdrive.
With her enigmatic mentor, Jack, covering her back, Nadia unearths sinister clues that point to an increasingly darker and deadlier mystery. Now, with her obsession over the case deepening, the only way Nadia can right the wrongs of the present is to face her own painful ghosts--and either bury them for good, or die trying. Because in her book everyone deserves a chance. And everyone deserves justice. From Goodreads.

It is a few years ago since I read the first book in this series and it was interesting how easy it was to get back into it. Nadia is a very likeable heroine. She is an ex-cop turned assassin, still struggling with how far she will go. 
One of her employee's has gone missing and nobody cares, so she starts looking. Without giving anything away the "bad guy" wasn't who I expected, I didn't actually have any suspects and I like that in a mystery book.
I will definitely be reading the next book in this series.   

This book qualifies for:
2014 Ebook challenge
You Read How Many Books? Reading Challenge 2014
Sequel Spring Reading Challenge
Crazy Challenge Connection: 1000 Member Celebration!
Goodreads Reading Challenge 2014
Nothing but Reading Challenges - Spell it Out - Animal Alphabet (N-narwhal)
Crazy Challenge Connection Bard of Avon