i'll keep all your secrets by the dozen

The answer to Calan's prayer comes with the violent clatter of pots and pans being hurled down a staircase, though there is no staircase anywhere nearby. A spirit bursts into being around Finch in a whirl of thick smoke that plumes around him in great rolling clouds, bright enough at their edges to look almost gilded in the sun and dense enough through the middle to swallow him whole. For several precious seconds, there is nothing visible inside it, and the thief will be unable to see out of it.