"Stephen Tolman."

With a click the boy hung up the receiver.

"Mr. Ackerman is coming right down," said he, addressing his father and the detective with a mischievous smile. "He has invited the three of us to go to the matinee with him."

"The three of us!" echoed the plain-clothes man.

"Yes," returned the lad. "I told him we had a friend with us and so he said to bring him along."

"Good heavens!" Donovan ejaculated.

Mr. Tolman laughed heartily.

"Not all the thieves you arrest take you to a theater party afterward, do they, Officer?" he asked.

"I said from the first you were gentlemen," Mr. Donovan asserted with humor.

"But couldn't you go?" inquired Steve, quite seriously.