A desperate alliance of human and Hroom factions gather to defeat Apex, a brutal alien menace who has vowed to exterminate all civilized races from the sector. The final book of the Sentinel Trilogy.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.