Poirot was staring at her in a way I found it hard to understand.

They were staring at her in a most curious way.

He stared at her in a very strange, intense way.

Everyone seemed to stare at him in a strange way.

They were both staring at me in a startled way.

She was still staring at me in a horrified way.

And Worf stared at her in a way that she had never seen before.

The old man was staring at her in a most disconcerting way.

Stared at her in a way that was designed to make a young woman's cheeks flush.

He was staring in a way that cut her to the quick.