She sat so easily on her stool, as if it were a nest. Golf Shirt paid for the drinks. He always had the exact change, unless he wanted to leave a tip. Coretti watched them work their way methodically through six cocktails each, like insects feeding on nectar. But their voices never grew louder, their cheeks didn’t redden, and when at last they stood, they moved without a trace of drunkenness a weakness, thought Coretti, a gap in their camouflage.