Jerry B. Jenkins & Tim LaHaye 
Unmasked 

As another prophecy is fulfilled in Jerusalem, Judd and Lionel are startled by what they find. On their way back to Illinois, they encounter a detour and end up as witnesses to one of the most terrifying events of the Tribulation. After running for their lives, the Young Trib Force find a new hiding place in Wisconsin, where Vicki and the others watch the frightening events unfold in Israel. As the world prepares to take the Mark of Nicolae Carpathia, the Young Trib Force members try to convince people of the consequences.The events in Unmasked parallel those that occur in the bestselling book The Indwelling.