As fans of the Terminator movies can tell you, keeping track of things in a time travel story can sometimes be tricky. Consider, for a moment, Rysa Walker’s new novel, Now, Then, And Everywhen (paperback, Kindle), which is the first novel of her new series, CHRONOS Origins, which is itself a prequel to her CHRONOS Files series…despite the fact that — as she explains in the following email interview about all of this — this new novel starts after the CHRONOS Files novels.