"Key, front door please--bell ring," he explained tersely, taking the key from the table.
Miss Cornelia issued instructions.
"See that the chain is on the door, Billy. Don't open it all the way. And get the visitor's name before you let him in."
She lowered her voice.
"If he says he is Mr. Anderson, let him in and take him to the library."
Billy nodded and disappeared. Dale turned to her aunt, the color out of her cheeks.
"Anderson? Who is Mr.--"
Miss Cornelia did not answer. She thought for a moment. Then she put her hand on Dale's shoulder in a gesture of protective affection.
"Dale, dear--you know how I love having you here--but it might be better if you went back to the city."
"Tonight, darling?" Dale managed a wan smile. But Miss Cornelia seemed serious.
"There's something behind all this disturbance--something I don't understand. But I mean to."
She glanced about to see if the Doctor was returning. She lowered her voice. She drew Dale closer to her.
"The man in the library is a detective from police headquarters," she said.
She had expected Dale to show surprise--excitement--but the white mask of horror which the girl turned toward her appalled her. The young body trembled under her hand for a moment like a leaf in the storm.
"Not--the police!" breathed Dale in tones of utter consternation. Miss Cornelia could not understand why the news had stirred her niece so deeply. But there was no time to puzzle it out, she heard crunching steps on the terrace, the Doctor was returning.