Renegade S01 E11 Lyon's Roar

"An outlaw hunting outlaws, a bounty hunter—a renegade"

Reno sets out to bring in Earl Lyons, a former comrade from Reno's Army Ranger days, who now is addicted to morphine and has gone insane, living in the wilderness. Reno must stop Lyons before either the trigger-happy authorities, or drug runners whom Lyons double-crossed, get to him first.