By the time Ginny chased out of the room, the corridor was already deserted. It was almost curfew, and the candle flames in the corridor had shrunk to tiny flickers.
"Who could it have been?" Ginny frowned slightly.
The barrier magic she had just cast over that little classroom had served two purposes: isolation and detection. Not only did it prevent anyone outside from hearing what happened inside, it also detected anyone approaching.
It was especially sensitive to invisibility magic and the Confundus Charm.
It was, in short, very advanced barrier magic designed to prevent snooping. Among the students currently attending Hogwarts, no more than three could cast magic of this caliber.
And Ginny was one of them.
The spell was also very well concealed, so although Ginny had sensed that person's presence, they could not have known they had been discovered.
Still, that person had moved very quickly. Less than three seconds had passed between Ginny sensing the barrier being disturbed and her packing up and heading out-she was already very practiced at the process.
Yet even so, by the time she reached the corridor, it was deserted.
"I don't know, but it was probably a student," Black Ginny said cheerfully within Ginny's mind.
"Why do you say that?" Ginny asked, somewhat surprised.
"If it were a professor on patrol, there would be no need to use a Confundus Charm to conceal their movements, would there?" Black Ginny said.
Ginny thought about it and nodded.
"Then it could only have been a student. That's a little surprising, though. I thought your group were the only ones with that level of magical power and skill in using magic," Black Ginny said with considerable feeling.
Her feelings toward Harry were complicated now.
On the one hand, knowing that he had brought