The sequel to 'Alien Taste,' this is the second "Ukiah Oregon" book.
A bit of background for this science fiction / mystery crossbreed: Ukiah Oregon was found wandering in the woods when he was a kid, a 'wolf boy' living feral. He was found by a lesbian couple who used humane traps to work with wolves, and they took him home, and began raising him as their own - after hiring a private eye to try and track down who he really was. The P.I. failed, Ukiah lived with the women as a son, and eventually, he and the P.I. started working together. In the first book, you find out a lot about Ukiah's strange origins, and start to realize just what he is up against.
'Tainted Trail' picks up where 'Alien Taste' left off, in that Ukiah and his P.I. partner are seeking out a missing person, but the ancient evil alien race Ukiah went up against in the first book may be behind what's going on in the wild woods where his childhood friend went missing.
Wen Spencer really upped the ante on this one - the hits land closer to Ukiah's core, the damage dealt is harsher, and the blood and guts got me a bit nauseated in parts. On the plus side (not that the above is necessarily a con), the supporting cast to this book is much more flushed out and interesting, and the mystery itself was complex enough to keep me reading. If you like your science fiction with a mystery twist, and like complex genetic plots, this is the series for you. I'm certainly ready for book three (though I might read something a tad less violent first).