Then they were through the entry and into the tunnel beyond, slipping soundlessly ahead.

There he slipped soundlessly into the cold black water and remained submerged, except for his face, floating easily as the night deepened.

The gown slipped soundlessly from her shoulders and she tiptoed like a shadow towards him.

After a quick glance to make sure that he wasn't observed, he slipped soundlessly up the staircase.

He turned, slipped soundlessly into the silence between the trees.

I began to notice the way the turtles slipped almost soundlessly into the water - just a tiny kerplunk.

There was someone else in the graveyard, someone who slipped soundlessly behind the church as she watched.

He slipped soundlessly from one piece of cover to another.

They slipped below the water soundlessly, then met up underwater.

He turned then with a swift, tight shrug and slipped out of the room soundlessly.