The Thicket by Joe. R. Lansdale

About 10 years ago HBO carried a series called Deadwood about the wild west as lived in Deadwood, South Dakota in the 1870's.   The series was memorable for its depiction of the squalor, ugliness, violence, and random acts of kindness in a free-wheeling frontier town .  The Thicket gives much the same feel, only this time in East Texas.  The story revolves around 16-year-old Jack Parker who loses his parents to smallpox, his grandfather to murder, and his sister to kidnapping by a band of low-lifes, all in a matter of days.  Determined to rescue his sister, Jack joins forces with a dwarf bounty hunter, his sidekick--a huge black man with an oversized shotgun, and, eventually, a prostitute, newly retired.  Their adventure has more than its share of evil doings by evil doers, all described in excruciating detail.  Nonetheless--or maybe because of--the slaughter and ever-present dangers, the book is hard to put down.  Jack tells his story with much dark humor and understatement, and he makes his partners at once engaging and ruthless.  Trigger warning:  some sex and frequent violence.