Haven of lost souls - Simon R. Green

Haven is a dark city, the rotten apple of the Low Kingdoms, where anything can be bought, stolen or fought for. From the slums and squalor of the Devil?s Hook to High Tory, were the aristos and politicians double deal, murder and corruption flourish openly. Swords and sorcery clash every day in the mean and merciless magical city of Haven.
Captains Hawk and Fisher, husband and wife, are the only honest cops in Haven?s City Guard. Together they take on everything from vampires and werewolves to locked-room murder mysteries, from conniving politicians to the enigmatic Beings on the Street of Gods.