The lawyer listened gloomily; he did not like his friend’s feverish manner.

“You seem pretty sure of him,” said he; “and for your sake, I hope you may be right. If it came to a trial, your name might appear.”

“I am quite sure of him,” replied Jekyll; “I have grounds for certainty that I cannot share with any one. But there is one thing on which you may advise me. I have — I have received a letter; and I am at a loss whether I should show it to the police. I should like to leave it in your hands, Utterson; you would judge wisely, I am sure; I have so great a trust in you.”

“You fear, I suppose, that it might lead to his detection?” asked the lawyer.