From the back of the book:
Anna never knew werewolves existed, until the night she survived a violent attack...and became one herself. After three years at the bottom of the pack, she'd learned to keep her head down and never, ever trust dominant males. Then Charles Cormick, the enforcer - and son - of the leader of the North American werewolves, came into her life.
Charles insists that not only is Anna his mate, but she is also a rare and valued Omega wolf. And it is Anna's inner strength and calming presence that will prove invaluable as she and Charles go on the hunt in search of a rogue werewolf - a creature bound in magic so dark that it could threaten the entire pack.
This is a re-read of Cry Wolf, the first book in the Alpha and Omega series. My original review of the book is here. I have to say I enjoyed the read, staying up far too late last night and finishing it this morning. Cry Wolf was as good this time as it was last time.
The story picks up after Patricia Briggs' short story in the anthology On The Prowl, which introduced us to the character Anna Latham, now Anna Cornick. We've already met Charles Cornick briefly in the Mercy Thompson series. You don't have to have read the Mercy Thompson books (which begin with Moon Called), but it does help set up the world and the situations the characters in the Alpha And Omega series find themselves in.
Patricia Briggs has done something somewhat different with this series than she did in the Mercy Thompson books. Where those ones are in a first person viewpoint and are entirely from the view of Mercy Thompson, this series is a more standard viewpoint and does include scenes from other characters views: Charles, Walter and the Moor's as well as others.
While I personally prefer the Mercy Thompson books, I have to say these are so very close a second that there's very little to choose from between them. I'm waiting for the next book following Hunting Ground eagerly.