The Shadow preferred to let it remain so, until later.
The Shadow prefers to have us wait until that question is settled.
The Shadow preferred to let the third plotter move into action.
Joe knew that The Shadow preferred to remain in the dark.
The Shadow, when he worked, preferred to move alone.
The Shadow had preferred not to risk the life of a trusted aid.
The Shadow, knowing that two more men might be involved, preferred to work alone.
The Shadow would have preferred that you remain in the cab which he provided.
The Shadow preferred to wait until another day had passed.
The Shadow preferred to allow some leeway when he was on the trail.