Twice the Inspector turned the letter over. Mahon fretted. He could see on its face the Division headquarters stamp—Lethbridge—but why all this ceremony and pother about an official note that came almost every day? He recalled suddenly that his wife would be holding lunch for him—with fresh fish he had seen unloaded little more than an hour ago from the through train from Vancouver. He could almost smell it sizzling on the natural gas cooker.

"Hm-m!" The envelope was not yet broken. "I imagine this will interest you, Mahon."

Suddenly the Inspector dived into a drawer and, taking from it an official looking envelope, passed it back to the Sergeant. The latter accepted it with fading interest. The Assistant Commissioner at Regina was unfolding to Inspector Barker's immediate superior, the Superintendent at Lethbridge, an unexciting tale of crime. Crime was their daily diet, and this was located far beyond their district.

Somewhere away up north, hundreds of miles beyond the jurisdiction of the Medicine Hat unit of the Mounted Police, events of concern to the Police were happening along the line of the transcontinental railway now under construction. Certain acts of sabotage—tearing down railway trestles and bridges, undermining trains, displacing grade, tampering with rails and switches—were not only hampering construction but endangering life. And things were growing worse. In addition there was complaint of horse-stealing at one isolated camp.

The point of the letter was contained in the last paragraph. Could Superintendent Magwood spare an experienced bushman and trailer to go north and take temporary charge?

Mahon handed the letter back with a laugh.

"Bit of a joke, horse-stealing from contractors who only last year grabbed every stolen horse offered them. Retribution!"

The Inspector swung about on his swivel chair.

"We never discovered who got those horses."

"The ones Blue Pete stole?" A cloud came to Mahon's face. "Not exactly the contractors who got them, but there was no doubt where they went."