Aunt might have had strength to crawl to the bell and touch it, but the assassin could not have escaped from the house, seeing--as you say--the policeman was on guard." "Aunt died instantaneously," insisted Basil.
"Then she could not have sounded the bell," said Juliet triumphantly.
"The assassin did that," said Peter.
"And thus called a witness," cried Basil.

"Ridiculous!" "Then how do you explain the matter ?" "I can't explain.

Neither can the detective Jennings.

It's a mystery." "Could any of the servants--" began Peter.
"No," interrupted Saxon.

"The four servants were having supper in the kitchen.