Black Dragon - Byzantium, #1

A gambler is cheating in a den of the Byzantium space station, and Lieutenant Zara  Frankel intends to catch him in the act. She always gets her man, but this one could prove more than she can handle. Captain Czerno Drake, code name Black Dragon, has come under cover to break his innocent uncle from the most secure penitentiary in the galaxy, on the Byzantium space station. He will stop at nothing to succeed, even enrolling the help of Zara, the lovely straight arrow GTA enforcer.
When Zara realizes that she's been duped by a shrewd but seductive rebel, her reaction surprises everyone, most of all herself.