Katherine "Kitty" Katt faces off against aliens, conspiracies, and deadly secrets in the seventeenth novel in the Alien series, where sci-fi action meets steamy paranormal romance.When a call for help from an unknown entity comes to Kitty, she figures it's just business as usual for her life. Only the call isn't from someone in her own universe but from one of the many others, where her life is even more different than the one she discovered in Bizarro World. And, this time, it's not just Kitty who changes universes.The fate of the multiverse is now resting on Kitty and company's shoulders, but they may not be able to save it alone--and the help Kitty's come to rely on may not be able to intervene, assist, or even show up to watch.Or, as the multiverse calls it: Game On.