Slocum and the Hanging Horse — Jake Logan

A six-shooter doesn't do much good when you're six feet under…
 
Slocum likes to bury himself in his work…but now he's in way over his head. Trapped underground, fighting for his life, all he can do is think about how he got into this mess…
 
It all started because of the most notorious road agent west of the Mississippi, Les Jeter. Slocum had to make sure that this outlaw paid for the lives he'd taken…along with Slocum's most prized possession -- his brother's watch. And he wasn't alone on the hunt. Ambrose Killian was obsessed with Jeter and wanted to bring this legend to justice for his own sordid reasons. Hot on his trail, Killian's enlisted his luscious secretary, a rival criminal, and a gang of greedy lawmen.
 
Slocum knew it would be a challenging job. Almost as challenging as staying alive as the minutes tick by -- and the air runs out…