"Is that all?"
Harding gave a short laugh.
"All? It's quite enough, Brennan. Between you and me it means that Eustace and I are suspected—one of us or both."
"Yes, that's right," Brennan said quietly. "One or both."
As he spoke he held out a message for Harding to read.
"Keep manager under close surveillance till I arrive.
"Durham."
"You know who Durham is?" Brennan asked.
"Never heard of him," Harding answered.
"He's the finest man who ever put on a uniform," Brennan exclaimed. "He is the sub-inspector in charge of this district—he's only been appointed a couple of months. I reckon it's only a temporary thing for him, just until there's room to make him an inspector. It's a good thing for your bank he is coming up. If anyone on earth can unravel a mystery, my sub-inspector is the man. He won't be long before he has the matter cleared up."