The Unseen — Brian Harmon

When Eric catches sight of Creek Bend, Wisconsin's most famous missing person, his mundane morning of running errands rapidly erupts into a chaotic search for mysterious, hidden places scattered throughout his own hometown. Along the way, he'll have to deal with strange monsters, a murderous cowboy and a curiously intimidating man in a pink shirt. The second book in the Rushed series. Horror-adventure, suspense and all-around weirdness.