"Was it—?" I began.

"Yes," replied McKelvie, "the man who was so foully murdered in this room that night was—Richard Trenton!"

Cora cried cut, "Dick, oh, not Dick!" and I put my hand to my head, for my brain was in a whirl. Yet I was conscious of a feeling of thankfulness that he was the victim rather than the perpetrator of the crime.

With a snarl of rage Darwin broke from McKelvie's hand and fled toward the safe. Jones started to follow, but McKelvie checked him with a laugh.

"Let him go, Jones. Have you forgotten that there are three men guarding the outer door?" he said.

Darwin paused abruptly and turned a hate-distorted face toward us, then he recovered his cool manner and walked back calmly to where we stood.

"You win," he said to McKelvie with a shrug. "What do you want of me?"

"If you will kindly be seated I should like to explain, with your corroboration, just exactly what did take place in this room that night," answered McKelvie.

"No," returned Darwin, "let me tell the story, for you would bungle the tale. I'll accept your word that you know what happened, since otherwise you could not have unmasked me. Kindly take off those bracelets, they annoy me, and give me a cigar. I swear to you that I shall make no attempt to leave this room."

For a long minute the two men looked into one another's eyes, then McKelvie stepped forward and removed the handcuffs. He bestowed them in his pocket, took out a cigar, and offered it to Darwin.