The cold chill up Mark's spine had nothing to do with the weather.

The rip went most of the way up his spine.

He felt the shock all the way up his spine.

I could feel it, like an electric current up my spine.

But this time the sound sent a chill up his spine.

Yet he felt a cold sweep of fear up his spine.

The chill had spread all the way up her spine.

The thing was about a third of the way up my spine now, and still moving at good speed.

She felt the tremor again, up her spine then down.

I hit hard and felt the shock all the way up my spine.