what does "make a tidy box"here mean? “Vinnie—Deputy Hanson—went to see him the night of the break-in here, to question him. He told Duncan about the break-in, about Abra. A straight shooter wouldn’t like being used so a client could break the law, put hands on a woman. So Suskind killed him rather than risk exposure.” “It could make a tidy box, when and if it can be proved. Right now?” She tapped the files again. “All we can prove is he bought property. And his wife didn’t strike me as loyal or afraid, not when I talked to her. Humiliated and bitter. I don’t know why she’d lie for him.”