I loved the book and everything seemed greatly thought of but something in respect of the end struck me. The person to be able to open doors, make passages and make openings appear is Door, however, in the end it is the Marquis who lets Richard back in and opens and makes the opening disappear ... seemed a bit strange to me.

Perhaps he didn't want to go to the cheesy end - it would have been a little too romancy to have Dor open the door and let Richard back in. And really, the Marquis is a slippery fellow. You never know what he is able to do. ;)

Also, while the door did open, Dor herself never MAKES a door appear. She turns the handle as it were, and something just OPENS. The door itself appears at the end, so it could be another kind of magic.

just because it's the marquis who emerges from the door, doesn't mean that Door didn't create it. she could just be waiting on the other side for them.

I thought Richard made the door, scraped it into the wall with his (Hunter's) knife, then turned away. Was there a sequel to this story? I loved it!

yah, i think youre right

In the Graphic Novel adaptation of the story you can plainly see that the Marquis came alone.

PS: The GN is pretty good, and I think it improves the novel. I enjoyed both.

Well...he IS still the master of the Key, maybe he still has the power to open doors to an alternate reality.Even though Door's got it.

yeah, it's in Richard's power to open the door because of the knife. I think it's implied that the Marquis was expecting him to come back and was waiting around for him to open up a passageway somewhere.