"I could use your help, sir," Batman continued, the same grave tone still in his voice.

"None we knew of," Nathan said in a grave tone.

"Come with me," the brother commanded in a grave tone as he marched away.

It was his grave tone more than the words themselves that had Mary sitting again.

As for this girl," he went on, in a graver tone, "I know not what to say.

He said to us in a grave tone: "Now we had better prepare for our great work.

When he spoke again, it was in a grave tone.

Twenty minutes later, to the second, his eyes refocused, and he turned to them with grave tones.

Finally, he asked in a grave tone, "Brian, did you shoot your father?"

"My dear young lady," he said in a grave tone.