Books in the Hong Kong Nights series

The battle between the Dragons of the Eastern District and their bitter rivals, the Twisted Vipers, is reaching a dangerous point. The Anti-Gang Task Force is hard at work trying to bring down the Vipers. Tensions ratchet when Johnny Hwang guns down a prominent inspector on the task force, and Conroy Wong, Wei Tseng's second-in-command is a witness. Now, to keep him safe long enough to locate a second witness and put Hwang behind bars, Conroy is forced into close quarters with Allen Hong, a man who once fought side by side with the Dragons until he turned his back on them by joining the police, betraying them. As sparks fly between them once more, the two men must put aside their differences and work together, because the Twisted Vipers aren't going to let Hwang go down without a fight.