I had to.

I have had my fill of vengeance.
He can go through the rest of his life, so far as I am concerned, unharmed.

But what I did, I was bound to do, and I am ready to face the consequences, if necessary." Louis nodded sympathetically.
"Monsieur," said he, "you have but to talk like that to convince the men whom you will meet in a few moments that you had a real grievance against Tapilow, and all may yet be well." "Who are these men ?" I asked.

"Is it a police court to which you are taking me ?" "Monsieur," Louis answered, "there are things which I cannot any longer conceal from you.

I myself, believe me, am merely an outsider.