She stared over his head, into the air, and horror stood on her face.

He stared over Ryan's head towards something on the far wall.

He stared into the distance over my head, weighing the matter.

He was staring over my head, at nothing that I could see.

He stared over her head, at a point on the wall, and continued.

Tom stood behind him and stared over his head into the shop.

He was staring over my head at things I couldn't see, and probably didn't want to.

I stared over her head and saw the first dim stars of evening.

He paused and stared out of the window, over her head.

She stared at the wall over my head and didn't say anything.