The moment the archway appeared and the cave opened.
A hidden mechanical device inside the cave clicked softly and opened.
Dumbledore and Harry, who had yet to enter the cave, clearly didn't notice.
"Knock, knock, knock."
The study door was knocked on once more, and Voldemort stopped talking with Augustus.
In fact, Augustus could already have left, but Voldemort had deliberately kept him there.
He wanted to have a chat with this Death Eater and learn more about him.
At least for now, he thought Augustus seemed all right.
"Come in," Voldemort called.
"Creak."
The door opened again, and the figure revealed was still Lucius.
Only this time, unlike before, Lucius looked rather excited.
"The red light's on?" Voldemort asked, his heart stirring.
"Yes, Dark Lord, the red light is on," Lucius replied excitedly, nodding.
"Phew."
Voldemort let out a long breath, suppressing his excitement as he turned to Abou. "Come with me."
He said no more, but Abou nodded as if it were only natural.
He seemed to understand what was about to happen.
"Lucius, proceed according to plan."
Voldemort looked at Lucius and held out his hand.
Lucius immediately came over and took it, then reached out with his other hand to grab Abou.
"Whoosh."
After Apparition, the three of them appeared in a dimly lit room.
It was a sealed room. The most conspicuous feature on the wall directly ahead was a red warning light mounted high above.
The warning light was shining brightly, accompanied by a buzzing sound that filled the room.
"Dark Lord, may I turn off the alarm?" Old Goyle asked, standing beneath the red light.
"Turn it off."
At Voldemort's command, the two Muggle operators behind Old Goyle began manipulating the controls on a complex console.
Before long, the red light went