The Perilous Tower. The Gates of Good & Evil, #3

The terrifying Merdrun are invading - and the world no longer has an army. Karan and Llian fled to the future to save their gifted nine-year-old daughter, but two days later Sulien far-sees the Crimson Gate reopen. The Merdrun are back, this time for good. And Santhenar, after the 160-year Lyrinx War and the decade of chaos that followed, is in ruins. Within days, its greatest cities fall to the most deadly army the world has ever faced.
But before the allies can begin the fightback, the Merdrun discover the worst folly of Scrutator Xervish Flydd's long life. The location of the Council's terrible lost weapon, an intelligent killing machine - the spellcaster. A weapon the Merdrun are desperate to find, to cleanse Santhenar of the human race. And only Karan, Flydd and his handful of tormented veterans stand in their way. You won't want to miss this truly epic fantasy series by a million-selling author.
What reviewers say about the Three Worlds books"A compelling adventure in a landscape full of wonders." - Locus"A page-turner of the highest order . Formidable!" - SFX on Geomancer"It is the most engrossing book I've read in years." - Van Ikin, Sydney Morning Herald"Readers of Eddings, Goodkind and Jordan will lap this one up." - Starlog"Utterly absorbing." Stephen Davenport, Independent Weekly"For sheer excitement, there's just no one like Irvine." SFX on The Destiny of the Dead"As good as anything I have read in the fantasy genre." - Adelaide Advertiser