And there they are, the heavy, slow footsteps of someone who just had the skeletons dumped out of his closet on the floor in front of him.

It's not like Sinclair intends to make him examine every single one, but a few questions need to be answered. For both of them, not just to satisfy Sinclair's curiosity.

But he doesn't speak. Apart from the fact that silence is an interrogation technique, to be fair he just walked in on everything that Jack had been trying to hide from him. He thinks Jack at least deserves the first word here.