As he looked at her, a movement behind him caught his eye.
His movement on the ground caught the eye of the other.
A movement caught his eye as he was about to step out into the open again.
A movement caught his eye and he looked beyond her.
A movement at the far end of the table caught his eye.
Any of them could turn and look up if her movement caught their eye.
Movement on the floor by the door caught his eye.
A movement to the left of the stage caught his eye.
The movement caught his eye fast, brought him up short.
A movement at the base of the fire caught his attention.