Timeless: Part Two (Out of Time Book #16)

In the heart-stopping conclusion to the Timeless saga, Simon and Elizabeth Cross have successfully reset the timeline — but the danger is far from over. The evil Shadow Council, now calling themselves the Continuum, are hellbent on eliminating the ultimate threat to their existence: young Charlotte Cross. 

Simon and Elizabeth, along with their friend and fellow time-traveler Jack Wells, must do everything in their power to protect Charlotte or all will be lost — for them and for the world — for all time.