Abruptly, a the two-tone sound of a police siren washed over them just as flashing blue lights drew Bellatrix's attention to the rearview mirror.
"What does he want?" Bellatrix asked.
"You just got pulled over for speeding," the salesperson sighed resignedly. "Park the car on the side of the road so he can talk to you."
Bellatrix pulled over and stopped the car. "You Muggles and your stupid speed laws," she said bitterly as she opened the door, stepped out of the car, and drew her wand. "You wait here," she told the salesperson as she prepared to slam the BMW's door shut. "This will only take a moment, and then we shall be on our way."
.....
A frown on his face, Harry suspiciously surveyed his surroundings as he emerged from a stand of trees in the park near to Privet Drive. He had not believed his ears when Kreacher had told him that Bellatrix wanted to meet him at #2 Privet Drive, but how else would the elf had known of Privet Drive? Harry walked onto the street of his youth, watching as the local children trickled from their houses and made their way toward school.
Harry strolled over to #2 Privet Drive and, after eyeing the BMW parked in the driveway, walked up toward the front door. Before he could knock, the door swung open to reveal Bellatrix. "Welcome to our humble prison facility," Bellatrix proclaimed, a smug grin on her face. "Did you have trouble finding it?"
"Of course not," Harry muttered, wanting to ask Bellatrix what she had been thinking, but mostly glad to see her after spending a few weeks in Albania. She hugged him and he responded with a kiss.
They separated, closed the door, and found themselves standing in the hallway of a house remarkably like the house in which Harry had grown up. Though there seemed to be some furniture, overall, the house seemed quite sparse and barely lived in.
Seeing that Harry was examining the furnishings, Bellatrix spoke up reassuringly. "We still live in our flat," she told Harry. "This is just a place specially designed to hold Pettigrew and anyone else we capture, all while preventing them from knowing where we actually live."
"Probably a good idea," Harry admitted.
"Of course it is," Bellatrix declared. "You have Pettigrew?" At Harry's nod, she continued. "Let me show you where he will be living out the remainder of his days."
They went down to the basement, and Bellatrix showed Harry a room with ceramic tiles on the floor, walls, ceiling, and even the back of the door. "This will hold just about anybody indefinitely," Bellatrix told Harry, drawing her wand and blasting the walls with various spells. "As you can see, no amount of magic can break through the boundaries of the cell."
"What about blunt, physical force?" Harry asked.
"Watch this," Bellatrix said, leading Harry out of the room. From a pile of supplies that was lying on the bare floor, she withdrew a stick of dynamite. Lighting the fuse with her wand, she tossed the stick into the room and shut the door. After the big bang, she opened the room to reveal that while the explosion had made quite a mess, it had caused no damage whatsoever to the walls, floor, and ceiling of the room.
"Quite remarkable," Harry declared, withdrawing his trunk from the pocket of his robes. He drew his wand, and after placing the shrunk trunk on the floor, enlarged it, opened it, and retrieved a glass bottle in which a panicked rat sat frozen, eying Harry and Bellatrix.
"He never impressed me very much," Bellatrix told Harry, taking the jar from his hands. "Yet, here he is, an animagus."
"He had help," Harry reminded Bellatrix, not sure whether he had told her everything he knew about the Marauders.
"I suppose so," Bellatrix murmured, walking with the jar back into the basement prison cell.
"Shouldn't we clean this up a bit, first?" Harry asked, gesturing to the walls of the cell that the stick of dynamite had partially blackened.
"This is a dungeon, Harry," Bellatrix said as she cracked open the lid and stunned the rat. She opened it completely and unceremoniously dumped the rat onto the tile floor. "It would not do to have it sparkling clean."
Harry looked around and grimaced, almost feeling sorry for Pettigrew.
Bellatrix pointed her wand at the rat, casting the spell to force Pettigrew out of his animagus form. Harry had only a second to look at Pettigrew before Bellatrix had cast another spell to wake him up. Disoriented, Pettigrew sat up.
"Welcome to our dungeon," Bellatrix said primly.
"B-B-Bellatrix Black," Pettigrew stuttered, looking up at his captors. "And Professor Ashworth."
"The same," Harry said.
"But you're dead," Pettigrew responded. "Dead."
Harry and Bellatrix shrugged, not seeing anything to respond to in that comment.
"What do you want with me? I haven't done anything to you. Please, just let me go." Pettigrew begged. "You will never see me again. I swear."
"I wish it were that simple," Harry said, gazing upon Pettigrew with pity. "Even if we did not need you, I do not think I could in good conscience let you roam free."
"What is it you want then?" Pettigrew demanded.