Apollyon: The Destroyer Is Unleashed (Left Behind #5) details from sapnaonline

Best-selling authors Tim LaHaye and Jerry B. Jenkins deliver a great page-turning combination of fiction and prophecy in the fifth book in the Left Behind series, "Apollyon." The Tribulation Force travels to Israel for the Meeting of Witnesses as further judgments are released upon the world. Satan falls from heaven and opens the bottomless pit, releasing "Apollyon" and his plague of locusts that torture the unsaved. "Apollyon" is a thriller that will be tough to put down.

In the latest volume of the Tribulation series, a plague of locusts torments those not sealed for five months, and a war will destroy a third of the population. The question of Amanda's loyalty will also be settled--one way or another.