This sequel picks up only a few years after the conclusion of the first one- now Mia and Lola are the mother/daughter duo of the One Hundred but though the Space Race bore fruit of past labors, this pair turns their focus to the distant past. The Trackers deviate from their passed-down goals as well & the ominous ending has me quite eager for the next installment! An interesting & exciting blend of history and science fiction, I love the details!