The rest of the crowd was an illusion caused by patterned film over the windows.

The captive was larger, though this might have been an illusion caused by the armor.

That, or it was an illusion, caused by the sudden absence of resistance.

However, optical illusion caused by the ball's spinning may play an important part in what makes curveballs difficult to hit.

The lights were an illusion caused by the lightning.

That may be an illusion, too, caused by the bending of light.

But that was illusion, caused by the shrinking of the meat of his body.

Had she taken on a list, or was it an illusion caused by her sails swinging?

Lidia explains that it is an illusion caused by the height.

It turned out to be an illusion caused by an alien creature.