Synopsis: Blades of Harcourt

I'm writing "Blades of Harcourt", which is a fantasy novel starring a cast of mercs. Heavy influence from The Black Company and Thieves World. Rook and Savina are a pair of married mercs. He's a warrior, she's an earth mage. They tend to argue a lot, but love each other, despite the stupid situations they find themselves in.

They begin the story fighting in a battle between the city-states of Harcourt and Highwater. Their army has a wraith in it, which should hint on which side they find themselves.
Not sure exactly where I'm going to go with this, but I suspect the Company will be betrayed, Rook and Savina will figure out how the wraith is being controlled, and a big fight happens at the end with an evil necromancer.