It's a MAD, MAD WORLD!! And we're invited for the ride of our lives. The first in this great new series combined the talent of two great writers (and two pf my favorite authors) with the premise of alternate post apocalyptic realities that converge bringing the adversaries of both main characters with them; Michael Talbot's Zombies and Jack Walker's Night Runners. If that isn't mind bending enough, this world has it's own nasty surprises revealed at the end of the first novel; motorcyclist monstrosities they name Whistlers. As they head toward the city of Atlantis, Trip spouts his usual babble that leads them to an abandoned train where upon arriving they learn Mike's injury from their earlier battle with the Whistlers is worse than first suspected. To make matters worse there is a horde of Smart zombies on their trail. A harrowing battle ensues but they make it to the city which will bring another set of problems since it seems that the Zombies and Whistlers are converging on the same location. To make matters worse it appears the Night Runners are also in the city but to find the answers they seek, they must enter it. Mike, Trip and Jack are faced with a series of running battles that even Trip has trouble coping with. WTF moments abound as Jack finds himself cornered several times. Mike and Trip face their own demons as a new adversary arises. The battles are intense and exhausting. The situations are nerve wracking leaving you at the edge of your seat and wondering just how much more they can take. Thank goodness there are Mike and Trip moments that help you catch your breath. Mark Tufo and John O'Brien have combined their talent and writing style to create a world that leaves the reader reeling with questions, guesses and speculations as to what will happen next. And with two great minds at work, the possibilities are endless.