She looked inside for a moment, then stepped across the threshold.

In the physical world, I had simply stepped across the threshold.

Miles stepped across the threshold and into a different world.

For a moment he stared at us across the threshold.

Once across the threshold, there was no way to change it.

Fully across the threshold, he stood within the study, where all could see him.

With further work, they can guide it across the threshold.

Then he led them across the threshold into the tower room of the House.

God, I even carried you across the threshold, near as makes no difference.

At the same time he took one step across the threshold.