again. The old man was sitting down at the table, apparently disappointed. At last he put his elbow on the table, and laid his right cheek against his hand. Mitya watched him eagerly.
“He’s alone, he’s alone!” he repeated again. “If she were here, his face would be different.”
Strange to say, a queer, irrational vexation rose up in his heart that she was not here. “It’s not that she’s not here,” he explained to himself, immediately, “but that I can’t tell for certain whether she is or not.” Mitya remembered afterwards that his mind was at that moment exceptionally clear, that he took in everything to the slightest detail, and missed no point. But a feeling of misery, the misery of uncertainty and indecision, was growing in his heart with every instant. “Is she here or not?” The angry doubt filled his heart, and suddenly, making up his mind, he put out his hand and softly knocked on the window frame. He knocked the signal the old man had agreed upon with Smerdyakov, twice slowly and then three times more quickly, the signal that meant “Grushenka is here!”