Helen's face looked very pale by the light of the lamp--the Doctor's was flushed, on the contrary, and quivering with anger and emotion.
Pen saw at once that there was a crisis, and that there had been a discovery.

"Now for it," he thought.
"Where have you been, Arthur ?" Helen said in a trembling voice.
"How can you look that--that dear lady, and a Christian clergyman in the face, sir ?" bounced out the Doctor, in spite of Helen's pale, appealing looks.

"Where has he been?
Where his mother's son should have been ashamed to go.

For your mother's an angel, sir, an angel.

How dare you bring pollution into her house, and make that spotless creature wretched with the thoughts of your crime ?" "Sir!" said Pen.
"Don't deny it, sir," roared the Doctor.