But Chapman knows every road, I
guess."

"Doesn't your father know the roads, too?"

"But Daddy and Momsy have gone to Aunt Ann's in New York and will not
be back to-night," Jessie explained.

"Anyhow we couldn't go hunting around in the dark after this
broadcasting station, wherever it is," Amy observed.

"Of course not," her chum agreed, taking the harness off her head.
"Come down to the telephone and I'll see if Chapman is in the
garage."

They ran downstairs, forgetting all about the radio concert they were
to have heard, and Jessie called up the garage to which a private wire
was strung.

The chauffeur, who had served the Norwoods ever since they had had a
car, answered Jessie's request quickly, and appeared at the side door.
Amy was just as eager as Jessie to cross-question the man about a red
barn with a silo. He had to ask the girls to stop and begin all over
again, and----

"If you please, Miss Jessie," he added, widely a-grin, "either let
Miss Amy tell me or you tell me. I can't seem to get it right when you
both talk."

"Oh, I am dumb!" announced Amy. "Go ahead, Jess; you tell him."

So Jessie tried to put the case as plainly as possible; but from the
look on Chapman's face she knew that the chauffeur thought that this
was rather a fantastic matter.

"Why, Chapman!" she cried, "you do not know much about this radio
business, do you?"

"Only what I have seen of it here, Miss Jessie. I heard the music over
your wires. But I did not suppose that anybody could talk into the
thing and other folks could hear like----"

"Oh! You don't understand," Jessie interrupted. "No ordinary radio set
broadcasts. It merely receives."

As clearly as she could she explained what sort of plant there must be
from which the strange girl had sent out her cry for help.

"Of course, you understand, the girl must have got a chance on the sly
to speak into the broadcasting horn. Now, all the big broadcasting
stations are registered with the Government. And if secret ones are
established the Government agents soon find them out.

"It might be, if the people who imprisoned this girl are the ones we
think, they may have a plant for the sending out of information that
is illegal. For instance, it might have some connection with race
track gambling. One of the women is interested in racing and the other
in automobile contests. If the broadcasting plant is near a race
course or an autodrome----"

"Now you give me an idea