Fools Die. by Mario Puzo. Book II. Chapter II. Part 5.
The one Jordan liked best was the Kid. Merlyn. Merlyn prided himself on being an impassive gambler. He tried never to show emotion when he lost or won and usually succeeded. Except that an exceptionally bad losing streak gave him a look of surprised bewilderment that delighted Jordan.
Merlyn the Kid never said much. He just watched everybody. Jordan knew that Merlyn the Kid kept tabs on everything he did, trying to figure him out. Which also amused Jordan. He had the Kid faked out. The Kid was looking for complicated things and never accepted that he, Jordan, was exactly what he presented to the world. But Jordan liked being with him and the others. They relieved his loneliness. And because Merlyn seemed more eager, more passionate, in his gambling, Cully had named him the Kid.
Cully himself was the youngest, only twenty-nine. But oddly enough seemed to be the leader of the group. They had met three weeks ago here in Vegas, in this casino, and they had only one thing in common. They were degenerate gamblers. Their three-week-long debauch was considered extraordinary because the casino percentage should have ground them into the Nevada desert sands in their first few days.