Almost two centuries ago, humans created Homo "varii" to help fend off alien invaders. "varii" are mostly human, but with enough animal DNA thrown in to give them special advantages. Now that the aliens are gone, the "varii" remain among us. They bag our groceries and service our cars, file our taxes and mow our lawns. Most pure-blooded sapiens don't care one way or the other, but some feel threatened and want them destroyed. Although he's worked alongside several dozen "varii" for years, Dan Blocker hasn't bothered to make friends with any of them. They're unfamiliar and strange, and they...