Borderline of Hell(1982)
(The third book in the Ninja Master series)
A novel by Wade Barker (Richard Meyers)
Heroes Beware. south of the Border General Estrada's harem is the borderland of hell-no senorita wh refused him sex is alive to tell the tale. A gorgeous flight attendant is missing in Mexico City. The whispers say"Rape Estrada. Slavery." Brett Wallace, Ninja Master, resolves to rout out the truth. But how can the world's deadliest martial are defeat machine guns and grenades? In Mexico, it seems the dead are burying the dead.
Used availability for Richard Meyers's Borderline of Hell
January 1982 : USA Paperback