No one's to go out, and no one's to come in but the detective whom I am expecting any moment." They had not long to wait.

Before their suspense had reached fever-point, a tap was heard on the great door.

It was opened, and a young man stepped in.
"Coast clear ?" he sang out with a humorous twist of his jaw as he noted the Curator's evident chagrin at his meager and unsatisfactory appearance.

"Oh, I'm not your man," he added as his eye ran over the whole place with a look which seemed to take in every detail in an instant.

"Mr.Gryce is in the automobile.