House of Chains Book 4 of The Malazan Book of the Fallen

In Northern Genabackis, just before the events recounted in GARDENS OF THE MOON, a raiding party of savage tribal warriors descends from the mountains into the southern flat lands. Their intention is to wreak havoc among the despised lowlanders, but for the one named Karsa Orlong it marks the beginning of what will prove an extraordinary destiny