The Eyes of the Dragon

In Chapter 30, after posioning the wine, Flagg takes the remaining poison in a packet that he shredded partly to make it look as though the mouse had been at it. He then puts it in a box with Peter's name on it that he once stole from Peter when he was a small boy. Flagg puts both the mouse and the box in a hiding place in Peter's room of which most all of the servants know.