what are two clue ascertained by detective nye after his interviwe with mr. and mrs.hickocks?

I'm not sure what you mean about clues, as Detective Nye's visit to Mr and Mrs Hickock garnered an enormous amount of information. He learns a lot about Dick's childhood (he came from a happy family that loved each other, his accident (the head injury that changed him), and the fact that Dick and Perry had left to meet Perry's sister in Fort Scott to pick up money.

Dick's father said that after his head injury, he “wasn’t the same boy.”

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