Vizet noticed something. Although That Figure was Voldemort, Dumbledore was not watching the figure, but gazing into the distance.
And the place Dumbledore was gazing at should have been Hogsmeade.
Earlier, when Vizet had transformed into his Obscurus state and rushed toward the location of the Dark Mark, he had noticed Filius Flitwick, Sprout, Moody, and McGonagall running toward the Quidditch Pitch;
The four professors' purpose was not hard to guess—to head to the Quidditch Pitch to guide the students and organize them to return to their respective houses;
This should have been done personally by the heads of houses. Since Snape was absent, Moody, who had appeared among the group, was clearly taking on the Slytherin Headmaster's duties and organizing the Slytherin students.
The reason for Snape's absence was easy to guess as well. Naturally, it was because of the Dark Mark hanging high in the night sky;
From Fenrir Greyback's memories, Vizet had learned that Snape had once been a Death Eater too;
As a Death Eater, Snape had clearly been marked by Voldemort with the Dark Mark, just like Lucius Malfoy;
Both to avoid suspicion and to prevent unnecessary trouble, leaving Hogwarts was undoubtedly a very good choice;
In that case, Snape's destination was easy to confirm. He had probably gone to Hogsmeade, then stayed inside the Shrieking Shack;
The Shrieking Shack had a notorious reputation. Even if the Dark Mark appeared there, few people would go and investigate. It was very suitable as a place to hide.
Thinking of this, Vizet first cast the "Silencing Charm" without leaving a trace, then voiced his thoughts. "Headmaster Dumbledore, are you waiting for Aberforth to send you news?"
"Oh?" Dumbledore responded, somewhat surprised. "When you came over, did you see Minerva and the others?"
"Mm..." Vizet admitted. "Professor Snape