An almost imperceptible discoloration extended from this wound up along the wrist.
In a moment Nick produced a small surgical pincers and drew from the little wound a needle-like piece of silver.
It was the point of a hypodermic syringe.[Pg 7]
This he stowed away with the hat-pin.
A few moments afterward young Rogers made his appearance.
"There is a mystery here," said Nick.
"What have you learned?"
"That I cannot tell even you, sir—at least not yet. But I shall have to ask you a few questions. Remember, if you do not answer them truthfully, or if you keep back any information concerning this matter, I shall not be responsible for the consequences."
"Mr. Carter," cried Rogers, "what do you mean?"
"Exactly what I say. You must trust me with all your secrets, if I require to know them. Otherwise, you will never know how your father died."