explain all about it."

"A matter very much easier dispatched than my debt to Professor
Kendrick," said Blake, complying.

The check was for two thousand, not one, the pilot saw when he
received it.

"Thank you very much, sir!" he said, saluting.

"Don't mention it. Good night--and good luck to you!"

* * * * *

The pilot returned to his plane, it lifted from the lawn, droned off
into the twilight.

Then they approached the cool white villa that stood invitingly a
hundred yards or so away beyond sunken gardens.

As they neared it, a handsome, well-preserved woman whose face
reflected Marjorie's own beauty came toward them. Lines of suffering
were still evident around her sensitive mouth, but her dark eyes were
radiant.

"Mother!"

"My poor darling!"

They rushed into each other's arms, clung, sobbing and laughing.

Kendrick was glad when these intimate greetings were over and he had
met Mrs. Blake.

They were in the drawing-room now, listening to a somewhat more lucid
account of their daughter's experiences and those of her rescuer.
Marjorie was doing most of the talking, but every now and again she
would turn to Kendrick for verification.

"Heavens!" gasped Mrs. Blake, finally. "Can such things be possible?"

"Almost anything seems possible nowadays, my dear," her husband told
her. "And you say, Professor, that you have brought back samples of
this invisibility device?"

"Yes, we have, but I can't promise they'll work. I'll try, however."

Whereupon, sceptically, he pressed that little square button--and
instantly faded out of sight.

"Good Lord!" cried Blake, leaping to his feet. "That proves it! Why,
this is positively--"

* * * * *

His remarks were cut short by a scream of terror from his wife.

"Marjorie--Marjorie!" she shrieked.

Wheeling, he faced the chair where his daughter had sat. It was empty,
so far as human eyes could see.

"Don't worry Mother--Daddy!" came a calm voice from it. "I'm quite all
right--coming back--steady."

And back she came, as did Kendrick, from the empty chair beside her.

His face was grave. The success of the demonstration, which had proved
their story to practical-minded Henderson Blake, had proved to him
something altogether more significant. The disc, as he had surmised,
had rushed eastward immediately on learning of their escape, and was
now probably hovering right over New York.

"Ma