“Yes,” confided the Hawk to himself, as he reached for a blank sheet of paper in the drawer of the table, “I guess I played in luck—both ways. Wonder if there's another ripe little melon here going to be shoved my way on a gold platter by the Butcher and his crowd?”

The Hawk studied the cipher for a moment.

“lqrtvy... key letter... stroke at six...two-three-one,” he murmured.

He drew the fresh sheet of paper toward him, and began to work busily. Occasionally he paused, staring dubiously at a letter—he had taken the message under far from ideal conditions, and a mistake here and there, if not fatal, was annoying and confusing. Finally, however, the Hawk leaned back in his chair, and whistled low under his breath. The message, deciphered and arranged into words and sentences, ran:

Final orders. Number One, Three, and Six hold up Fast Mail three miles east of Burke's Siding to-night. Cut wires on approach. Express car next to engine. Uncouple and proceed. Diamond shipment in safe. Messenger drugged. No interference with remainder of train. Deliver safe five-mile crossing to Number Four and Seven. Number One, Three, and Six take engine and car further along the line. Return separately to Selkirk.

Again the Hawk whistled low under his breath—and for the second time reached into his inside vest pocket. He took out a letter that was addressed, care of general delivery, to Mr. J. P. Carrister. The Hawk puffed pleasantly at his pipe as he read it:

“Dear Friend: The folks are all well, and hope you are the same. I haven't had time to write much lately. I like my new job fine. Say, I felt like a Fifth Avenue dook for about umpty seconds to-day. One of the fellows in the office let me hold a package of diamonds in my hand just to see what it felt like. Gee! Say, you could almost shove it in your vest pocket, and it was invoiced through customs at twenty thousand plunks. They were unset stones, and came in from Amsterdam. It made me feel queer.

“I wouldn't like to be the fellow that has to keep his eye on it any of the way from here to San Francisco, where it's going to-morrow by express. If you see any bright lights flashing around your burg that you can't account for about 11:15 next Wednesday night, you'll know it's the diamonds going through in the express-car safe. I'm getting to be some joker, eh? We all went down to Coney last Sunday. It's been fierce and hot here. Say, don't be a clam, write us a line. Well, I guess there ain't any more news. Yours truly, Bud.”

The Hawk, instead of folding up the letter and returning it to his pocket, began meditatively to tear it into minute shreds, and with it the police circular and the sheet of paper on which he had worked out the cipher message. The Fast Mail scheduled Selkirk at 11:15—and this was Wednesday night!

“Twenty thousand dollars,” said the Hawk gently under his breath. “Thanks, Bud, old boy! You were there with the goods all right, but it wasn't a one-man job, and I didn't think there was going to be anything doing.” The Hawk grinned at the ceiling. “And just as I was about passing up the last check, here they go and fix it for me to scoop the whole pot! Three miles east of Burke's Siding, eh?”