Only then did she notice the man standing behind Samuel.

As she said this, I noticed others in the room behind her.

There's little time or opportunity to notice the markers behind the trees.

They moved away from me, not noticing my presence behind them.

He had taken a guard's place, she noticed, beside and behind her.

Suddenly she noticed a movement behind a tree near the wall.

Robyn did not even notice the door close behind her old friend.

A member of the 'audience' turned around at this point, noticing the movement behind her.

At this point they noticed a white van behind them.

She shook herself, then noticed a small niche behind the bush.