Detroit Combat — Carl Ramm

A gang of pornographers turns kidnapped women into sex slaves -- and only Hawker can save them

Brenda Paulie is fresh out of law school, newly married, and recently pregnant. She's also marked to die. In an affluent neighborhood of Detroit, three masked men burst into Brenda's house, beat her husband senseless, and take her captive -- their thirteenth victim this year. Only one man can save her: James Hawker, America's deadliest vigilante. And when he comes to Detroit, the city will never be the same.
 
Hawker's one-man crusade against organized crime has taken him into the beating heart of the nation's pornography industry: the crumbling smogscrapers of downtown Detroit. Smut is one thing, but kidnapping is another. To save Brenda and all the other victims of vice, Hawker must infiltrate an empire of filth.
 
Detroit Combat is the 7th book in the Hawker series, but you may enjoy reading the series in any order.