Mom (Aeolus Investigations Book 7)

Hot on the trail of yet a fourth ancient artifact the Aeolus team has taken to referring to as the Horseman of the Apocalyse, Lexi is captured by the the six-fingered Gadtons. Now, the Gadton's technology is inferior to the Accord's with one notable exception. They've solved time travel.
Join Lexi, along with her new team, as they journey through space and time to save the future.
And where's her old team, you ask? Well, Geena is on Earth making a baby. Both Ron and Urania are dead.
Killing Ron, and Urania, for that matter, proved to be a really, really bad decision for the Gadtons.