"Tell her it's all right and that you know who we are," commanded McKelvie. "And without leaving this room," as Orton started to move away. "I guess she can hear you from here."

Sullenly, Orton obeyed, and then seating himself on the sofa, demanded what we wanted.

"At the inquest you gave several bits of information which had no foundation in fact," began McKelvie, going straight to the point. "You lied and you know it. For that matter so do I. Now I want to know why?"

"Mr. Davies, of course I know," answered Orton with a sneer. "But what right have you to question me?"

"I am investigating the case for Mr. Davies on the quiet," answered McKelvie suavely.

"And that gives you the right to intrude on my privacy, I suppose?" continued Orton sarcastically (he had abandoned his rôle of "humble still," or rather he was Uriah Heep grown bold through triumph), "and to force yourself into my rooms?"

McKelvie shrugged. "Really if you would rather be put through the third degree at Police Headquarters it's a matter of indifference to me."

Orton's pallid face became livid. "Are you trying to frighten me by pretending that you believe that I killed Philip Darwin?" he cried, but his voice trembled in spite of himself.

"No, I'm not pretending any such thing. I know you didn't kill him. You're too much of a coward," returned McKelvie contemptuously, whereat Orton gave a gasping sigh of relief. "But I do say you know more of this murder than you gave out, and a hint to that effect in the ear of Jones will be quite sufficient to bring the police to this place. No doubt you have a telephone that I can use. I'll give you five minutes to decide."

But Orton didn't need five minutes, no, nor even ten seconds. McKelvie had hardly finished speaking when Orton flung himself forward with clasped hands, his prominent eyes fairly popping with terror.