The Traitor's Gamble (Glass and Steele Book 1.5)

5 years before Matt meets India in London, he finds himself in the American backwater of Broken Creek, a Wild West town on the fringe of the civilized world. Employed by the local bank to investigate the heist of gold bullion, he goes deep undercover along with his friends, Duke and Cyclops, and his cousin Willie.
Drinking and gambling to excess haven't deterred the pretty schoolteacher's daughter from taking an interest in Matt, and despite the concerns of his friends, he has no intentions of giving up his vices. Not even when the arrival of his outlaw grandfather risks exposure—and his life.
Can Matt find out who is involved in the theft before it's too late? Will his grandfather forgive him for leaving the family trade, or make him pay? And will Matt's bad habits dig him into a deeper hole than he can climb out of?