I feel like I always say this, but I love this book. I really, really do. It is the perfect adventure/romance/zombie apocalypse story. Oh, and steampunk.
The female protagonist is as tough as nails, a captain of an airship and a mercenary. The male lead is a treasure hunter with a dark past and flamboyant taste in waist coats.
And there are zombies. Lots of zombies.
You should read this book. It has a twisty plot and excellent character development along with steam-powered contraptions, pirates, and did I mention zombies?