"There!" sneered the detective triumphantly, "I thought Miss Berg would know."
Miss Allen fairly glared at the other clerk.
"You showed them rings?" asked the superintendent. "What kind of rings?"
"Why, I had the tray—with the mixed pieces——"
"Just a minute," interrupted Miss Allen. "Miss Berg, what time did you ask permission to leave the floor?"
"At 10:15," replied the other promptly.
"And the ring was lost, or missed, at 10:20. You were not on the floor when it happened, at all."
"She ought to know her own business," snapped the detective.
"And I ought to know mine," replied Miss Allen. "I gave Miss Berg fifteen minutes, and she was not there when that tray was out of the case."
"You should be very careful in a matter of this kind," cautioned the superintendent.