Outcasts in Time (The After Cilmeri Series)

Last we heard from David, he'd allowed George to abduct him at the behest of the CIA, for the stated purpose of forcing him to time travel between Earth Two and Avalon. Meanwhile, Lili and the refugees from Paris were floating down the River Seine, making for the English Channel. And King Philippe was blithely reconstituting his government, unaware that the battle of wills between him and David hadn't really ended the way he thought. And that, in fact, it hadn't even ended.

David and his companions have pulled off the heist of the millennium. But as David encounters the unexpected in Avalon, and Lili and the refugees face danger at every bend in the river, they must accept the hard truth that the best laid plans go awry at the moment of contact with the enemy. And no one ends up exactly where they intended, either in space … or in time.

Complete series reading order: Daughter of Time, Footsteps in Time, Winds of Time, Prince of Time, Crossroads in Time, Children of Time, Exiles in Time, Castaways in Time, Ashes of Time, Warden of Time, Guardians of Time, Masters of Time, Outpost in Time, Shades of Time, Champions of Time, Refuge in Time, Outcasts in Time, Hidden in Time. Also, This Small Corner of Time: The After Cilmeri Series Companion. 

Outcasts in Time follows immediately after the previous book in the series, Unbroken in Time.