“That mail-order detective? Not much! It is getting serious. I’ll send Purcell up to look the ground over. A man can’t make nickel-silver keys, and break out of houses and leave engraved spoons and forks around without leaving plenty of traces. We’ll have the man to-morrow, and give him a good scare.”

Detective Gubb in the meanwhile had gone directly to Mr. Millbrook’s un-burgled house at 765 Locust Avenue. Mr. Millbrook, a short, stout man with a husky voice that gurgled when he was excited, opened the door.

“I’m Deteckative Gubb, of the Rising Sun Deteckative Agency’s Correspondence School of Deteckating, come to see about your un-burglary,” said Philo Gubb, opening his coat to show his badge. “This is a most peculiar case.”

“I never heard anything like it in my life!” gurgled Mr. Millbrook. “Didn’t take a thing. Left a dozen spoons. Came in at the front door and broke out through the cellar window.”

“How long have you been married?” asked Mr. Gubb, seating himself on the edge of a chair and drawing out a notebook and pencil.

“Married? Married? What’s that got to do with it?” asked Mr. Millbrook. “Twenty years next June, if you want to know.”

“That makes it a difficult case,” said Philo Gubb. “If you was a bride and a groom it would be easier, but I guess maybe you can tell me the names of some of the folks you’ve had to dinner.”

“Dinner?” gurgled Mr. Millbrook. “Dinner? When?”

“Since you were married,” said Mr. Gubb.

“My dear man,” exclaimed Mr. Millbrook, “we’ve had thousands to dinner! Dining out and giving dinners is our favorite amusement. I can’t see what you mean. I can’t understand you.”