Mason glanced at the detective. “Evelyn Whiting?” he asked.

“Yes, the one who was nursing the man with the broken neck.”

“You’re sure?” Mason asked.

“Absolutely positive,” she said.

Mason said to Drake, “All right, Paul, there’s your answer. Della spotted this material. She went out to check up on it. Remember, Evelyn Whiting had been out in that mountain cabin since yesterday afternoon. Eves had been away all night. Eves is a known crook. He’d stop at nothing. Now, if Della were pinning something on Evelyn Whiting—”

Drake reached for the telephone. “What do we do, Perry?” he asked.

Mason said, “Round up a bunch of hard-boiled dicks with plenty of guns and ammunition. We’re going back to that cabin, Paul. Thinking back on it, Eves was altogether too much on the prod when he came in, then he was too anxious to make a play for my gratitude. Get going!”

Drake grabbed the telephone, put through a call to his office and said, “Get me half a dozen tough babies who can dish it out and take it. I’d like to have a couple of special deputy sheriffs in the lot, and I want guns, ammunition and tear gas.”

“What is it?” Belle Newberry asked, staring with apprehensive eyes at the grim face of the lawyer.

“Della Street’s missing,” Mason said. “She went out this morning and we haven’t heard from her since. A check-up on the hospitals and automobile accidents shows she hasn’t been injured. When she went out, she was trying to trace down this piece of blue silk.”