Justified: The third sequel to The Yellowstone Conundrum (Is This It? Book 4)

This is the complete 1000-page novel encompassing previously-published Part 1, Part 2 and Part 3. Governor 'Big Jilly' Stephens of Texas declares war on Mexico and gains the reluctant support of the President. The goal is to clean out the Sinaloa Cartel's strongholds in Cuidad Juarez and Chihuahua. Meanwhile the cartel supports the ISIS attempt at a second attack on a U.S. city and gets away with it. Drug runner Russell Ramsay, sent by a Panama City FL drug lord, meets the cartel's bosses--money and drugs are exchanged.

In Valentine, Nebraska, Penny, children Amanda and Jason, along with Cameron and Betsy start a journey to Penny's parents in Portland.

Nancy O'Brien's relationship with 22-year old David Freer gets more complicated than before while her husband Robert is given an important assignment by the President.