Catch a Killer by the Toe by Pete Peterson

Marshal Sam Catlin's attempts to keep order in the unruly Western town of Fairplay are becoming more challenging by the day. First is the discovery of the body of Caleb Tinker. Then, the local beggar is nearly killed and one of his oppressors turns up dead. When his investigation reveals the events may be related, Catlin finds he'd better solve the cases soon...or risk becoming the next corpse.