Which one of them was guilty?
Time alone would tell.
At recess that morning the subject of the play was for once forgotten in the excitement occasioned by the principal's recent disclosure.

Groups of girls indignantly denied even the thought of such mischief.
"I don't believe Miss Thompson would ever suspect us of any such thing," remarked Jessica to her friends.
"Of course not, goose," replied Grace.

"She knows us too well for that." But it was with a peculiar apprehension of something unpleasant that Grace answered a summons to the principal's office just before school closed for the day.
"Grace," she said, as the young girl entered the office, "were you in my office yesterday afternoon between half past one and a quarter of two ?" "Why, yes, Miss Thompson.

I came to ask permission to use the gymnasium, but you were out, so I came back and asked you just before school closed." "Yes, I remember that you did," replied the principal.

"However, I want you to read this." Grace took the paper, looking rather perplexed, and read: "Ask Miss Harlowe what she was doing in your office between half past one and a quarter of two yesterday." "A PASSERBY." "Why--why----" stammered Grace, her eyes growing large with wonder.
"I don't understand.