Paul’s flat in Kentish Town is more than a place to return to: it becomes a temporary workshop for solving Humphrey’s magical lock, the destination of a rescue through the portable door, and the setting for a final comic test of recognition. Its ordinary domestic disorder contrasts with the fairy-tale machinery brought into it—swords concealed in stones, keys hidden in blades, and a door that can be pasted onto a wall—while its familiar floor becomes the first solid ground reached after a long confinement.

The flat as a domestic setting

When Paul and Sophie bring the recovery attempt to the flat, it is in its usual scruffy disorder. Paul privately thinks it so untidy that even a bomb might count as a makeover, but Sophie is too focused on the task to notice, and he does not care what Mr Tanner’s mum thinks of the mess. The detail gives the room a practical, unceremonious character: it is not prepared as a magical laboratory, but becomes one because the urgent work requires a place to continue.

The flat’s significance is sharpened by what occupies its floor. The stone containing the sword is there, and the later arrival home confirms that the sword is no longer in it. In the earlier inscription, the blade’s promise of kingship is paired with a smaller instruction to dispose of the stone tidily after use. That mixture of legendary authority and mundane housekeeping captures the story’s treatment of magic: an object can carry the weight of a fairy tale and still be handled amid the disorder of an ordinary home.

Recovering the keys

The flat becomes the site of the second attempt to retrieve the paired keys. After Paul and Sophie have extracted the first key elsewhere, they take a taxi from Wimbledon to Kentish Town and turn to the second sword. It comes out as easily as the first. Its tip is not a sharp point but a blunt, crinkled edge, shaped like a key’s wards; Paul bends the key portion sideways until the brittle metal snaps, then keeps it.

The process makes the sword less a weapon than a container. What first looked like a test requiring force or a fairy-tale qualification yields to close inspection and the recognition of a concealed key. The flat is where the pair can set the two discoveries against the problem they are meant to solve, turning the apartment’s wall into the next working surface.

The portable door and the rescue

Paul smooths the portable door out of its cardboard tube and fixes it to a wall in the flat. He tries the first key in the top lock and its counterpart in the lower one; both fit perfectly. Before opening it, he observes that Humphrey may not have been the person who hid the keys. The thought introduces uncertainty about who arranged the solution, but does not delay the rescue.

Once the door is opened, the flat receives those who had been trapped. Mr Tanner’s mum pushes Arthur through first, explaining that she needed to make sure the way was safe; her protective gesture strikes Paul as almost touching. She follows, then Sophie and Paul. He closes the door gently, catches it as it rolls up and falls from the wall, and finds Pip and Arthur standing in the middle of his floor, on either side of the now swordless stone. Arthur admits that he had preferred the arrangement before, though he is glad to be out—and then corrects himself, glad to be back. The change is concrete: a room that had held an empty stone and a domestic mess now holds the people restored from confinement.

Return and mistaken recognition

Later, after the office has sent Paul and Sophie away because it is past half past five, they walk and talk for a while. Sophie tactfully tells him that she loves him but is exhausted after the eventful day, and that they must be back at work at nine the next morning. Paul leaves her and eventually returns alone to the flat. There, the absence of the sword is the first thing he notices; he remembers why it is gone.

The second surprise is an apparent Sophie rushing across the room and throwing herself into his arms. Paul registers the embrace as wrong in several specific ways: she does not seem tired, he cannot work out how she entered, and the kiss lacks the awkward collision or complaint he expects. When the figure turns back into Mr Tanner’s mum, he has already guessed the disguise. The flat thus closes this sequence not with another magical escape but with an intimate space made briefly unreliable: even a familiar arrival has to be tested against what Paul knows of the person who should be there.