Women in Trouble Box Set

A four book box set where a variety of beautiful women find themselves in serious trouble at the hands of sadistic men, comprising:
Strategies of War, where three different women fall into the hands of Captain Rudi Brampampk.
Dark Reality, where Serena wakes up in the dark, bound and helpless, with a mystery man to torment her.
Mckenna's Surrender, where a female spy falls into enemy hands.
The Avenger, where two female terrorists pay for their crime.