You have no trouble sneaking back to Brolinar's Bookstore. You simply keep to the back alleys and do not draw attention to yourselves.
Once back at the bookstore, you are surprised to see the lights on inside. Looking in through the window, you see a very old man with long white hair and a flowing white beard, dressed in blue robes and peering through dirty spectacles.
The man seems physically quite frail, but he makes his way about the bookstore in an almost spritely manner, with a spring in his step and a twinkle in his eye. As you watch, he moves throughout the store picking up books and replacing odds and ends in their correct locations. At one point, he stops and looks at the scorched area caused by the broken lamp earlier in the evening. He regards it for a long moment. Then he contorts his right hand in a strange gesture and mouths a few words you cannot hear. Instantly, the scorch marks disappear, and the counter and floor are returned to their previous condition, as if the fire had never occurred.