The Shadow had rounded through the kitchen and returned to the hallway.
The Shadow had returned from his trip to the rear road.
The Shadow had returned to the gloom of the room.
The Shadow was returning now, to put an end to crime.
The Shadow returned to the closet for another piece of luggage.
The Shadow had returned to the mysterious thickness of the night.
The Shadow, apparently satisfied that the room was empty, had returned to the light.
The Shadow returned to the darkness of the street above.
The Shadow did not return to the doorway of the penthouse.
The Shadow was returning to a scene of crime to learn more details that he needed.