“All right, Chief.”
“Wait a minute. Stop somewhere on your way up-town and find out the exact temperature changes last night. What I want you to get is a record of every quarter-hour, so as to show when the early, packed snow in Stockbridge’s yard froze solid. The under crust!”
“I got that in my head, Chief! That’s my idea, exactly. If a tall lad tapped in on the junction box early in the night his footprints will be frozen close to the ground. The whole surface is level now, but there ought to be ice-posts sticking up when I get done thawing.”
“That’s right! You’ll probably find the trouble-hunter’s and one other set of prints. The other set is our man’s!”
“What size feet did the trouble-hunter have?”
“Small—about six!”
“All right, Chief, I’m off.”
“Walt a minute.” Drew studied a sheet of paper. “After you get the temperature data, Delaney,” he said. “After you get that and the plaster casts of the footprints, go into the house and stay there. Watch Miss Loris. Don’t talk to Fosdick’s men. Tell her to be careful. Tell her that she is in grave danger. Remember that the same man who threatened Stockbridge over the wire, also said he was going to get her. Remember that, Delaney!”
“Good-by!”
“Get a shave!” shot Drew out through the closing doorway.