The invisible cage removed them from the otherworld.

Here was a blank, a blind spot, in the invisible electric cage that imprisoned him.

Darkhorse kicked at his invisible cage, frustrated more than before.

It was a well-accepted 'fact' that a circle of unicorn's horn would act as an invisible cage for any spider.

One broadening side passed within ten feet of the humans' invisible cage.

The two Furs, the leader and the other male, strode toward the humans' invisible cage.

On the other hand, if they were outside the invisible cage, where would they get away to?

I think now he was a man fighting constantly to escape the bars of an invisible cage.

Nicholas groaned, pressing against the invisible cage that held him.

He had not yet made a cover for the invisible cage, and that would take a good bit of time.