How does the doorknocker change in A Christmas Carol?

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brendawm eNotes educator| Certified Educator

Scrooge returns home after dinner at a local tavern to face a door that he has passed through at least two times a day for many, many years. This time, however, there is a difference; the doorknocker is in the ghostly image of his former business partner Jacob Marley.  When Scrooge refocuses on the door, however, there is nothing there but the regular doorknocker, which causes Scrooge to shrug off what he saw as his eyes playing tricks on him, which he has no time for.