Searching the office of the murdered man, Lewis opens a shallow drawer, and begins to take out files, which he hands to Hathaway. And he keeps on taking out files until the stack of them in Hathaway's arms is far taller than the depth of the drawer. EDIT: Lewis opens another drawer to take out the second set of files.
Near the beginning, Lewis is dressed in suit and bow tie, and supposedly looking at himself in the mirror. But the way reflections work, if the viewer can see him in the mirror, then he would be seeing the camera in the mirror. He would not see himself at all.