A Time for Vengeance — Giles A. Lutz

Jonse Kirby's world is abruptly shattered when he returns home one day to find his wife dying of stab wounds. He immediately sets out to track down the killer, a man about whom he knows nothing except that he has red hair and a long scar on his face.

Jonse's quest for revenge leads him into a fierce battle-to-the-death with a hungry mountain lion; lands him in the middle of a bloody feud between two women and their sons over an inheritance; and unexpectedly gives him a new reason to go on living.