Disclaimer: Don't own.

Author's note: I have a deviantart account now! Most of the stuff I post over there will be related to Regulus and some of it will be based on my stories here. There's a link in my profile, so go check it out! And remember, as mentioned last chapter, Tom Riddle is Dr. Riddle's(Voldemort's) son. Dr. Riddle was killed and Tom Riddle was captured and sent to Azkaban.

"What was in that container?" Hermione asked once they were safely outside.

"DNA sample from Tom Riddle," Harry told her.

She stared.

"What? The Order's going to be in an uproar!" she shrieked. "He's in Azkaban right now! Imagine what they'd do if they thought he'd escaped."

"Snape is one of the few people who can tell the difference between genuine DNA and DNA from me when I've changed my DNA. Besides, once he finds Ron's nanobot and my smashed container, it won't be hard for him to deduce what happened."

"It's still risky," Hermione warned.

"It'll be fine," Harry assured her. "Come on, let's find this place."

"It's only three blocks away," Hermione told him. "Strange, you'd think someone would have found out more by now."

When they reached 12 Grimmauld Place, they understood why it had been difficult for anyone to find anything. 12 Grimmauld Place didn't exist.

"It must be a fake address," Hermione decided.

"But why is there a 13 and an 11 Grimmauld Place?" Ron pointed out. "I mean, it should be right between them."

"You have a point, Ron," Harry admitted. "I wonder…"

He changed his DNA to match Sirius' and began to approach the place where 12 Grimmauld Place should have been. Suddenly, it was there.

"Harry! Where are you?" he heard Hermione calling.

Harry stepped back.

"I found it," he told her. "It's there. There's just one hell of a security system. Here, take my hand."

He took Hermione's hand in his left hand and Ron's in his right and walked forward with them until 12 Grimmauld Place appeared.

"How'd you get us in here?" Hermione asked suspiciously.

"Lucky guess," Harry admitted. "I just figured that the wards might be programmed to recognize Sirius' DNA."

"Can we just get on with this?" Ron asked impatiently, heading towards the house.

He pushed open the door and Harry and Hermione followed him inside.

"It's a nice place," Harry remarked.

"There's something not quite right," Hermione muttered.

"Scan the house," Harry suggested.

She nodded. Moments later, her eyes snapped open.

"We're alone," she told them.

"Then what's that?" Ron asked, pointing at a shadow moving in their direction.

An ELF unit stepped out of the shadows.

The three friends tensed as the small robot approached them.

"Who are you?" the unit asked in a squeaky voice. "The wards told me Sirius Black had entered."

"I'm Harry Potter, and these are my friends, Ron and Hermione," Harry replied. "Who is your owner? Why are you here?"

"My owner is Regulus Black," the ELF said. "This is my home."

"We're looking for Regulus," Harry told him. "He disappeared a long time ago."

"Are you from the Order?" the ELF asked suspiciously.

Harry nodded.

"We're Junior Agents," he explained.

"Can you prove it?" the ELF asked.

Harry held out his palm, which contained a miniscule identification device imbedded in it. He knew the ELF would be able to scan it with a single glance. Ron and Hermione did the same.

"Come with me," the ELF requested.

He led them up to the second floor of the house, into some sort of study. With almost religious reverence, he picked up a small object from the desk and handed it to the trio.

"What is it?" Ron asked.

Hermione studied it for a few moments.

"It's an audio recorder," she realized. "A type 40! This is ancient! I've never seen one in real life!"

"Yeah, but what does it do?" Ron asked.

Hermione swatted playfully at him.

"It records audio files, idiot," she told him. "You can speak into it and it will record what you say."

"You mean you actually have to say stuff out loud?" Ron realized.

"Twenty years ago, this was cutting-edge technology," Hermione reminded him. "They didn't have telepathic analyzers."

"What happened to the ELF?" Harry wondered.

It was slumped over, unmoving.

"It lost power," Hermione told him. "I noticed when we came in that it had very low power. It must not be able to access its power source. It must have been hibernating for years, waiting for someone from the Order to come so it could carry out its final order."

"Final order?" Harry asked.

"ELFs are programmed to be loyal beyond all else," Hermione reminded him. "I think Regulus is dead, and this audio recorder will tell us what happened to him. Regulus' last order to this ELF must have been to deliver these files to someone in the Order. Now that it's finished its task, it finally let itself die. Of course, if we had a power source, we could revive it. But that ELF is ancient. It might be too old to be revived."

"How do we download the file from the audio recorder?" Ron asked. "I want to know what happened."

"Have you been listening to me?" Hermione wondered. "I told you, this is ancient. You don't download the file. You press this button and it plays."

She turned to Harry.

"This was your idea," she said. "Do you want to do the honors?"

Harry gently took the audio recorder and pressed the button Hermione had indicated. The small speakers in the device crackled to life, and a steady voice began speaking.

Log OO

September 21, 1979

Operation Guardian

My name is Regulus Arcturus Black, codename: Agent Basilisk. This audio recorder will be used to store files from my upcoming mission, Operation Guardian.

Mission objectives: I will be infiltrating the ranks of the evil Dr. Riddle's henchmen, known as the Death Eaters, with the assistance of my ELF (Electronic Life-simulating interFace), Kreacher. Agent Grease will assist me when possible; although his own mission is top priority (I won't say any of my fellow agents' real names, in case Dr. Riddle should one day break into these files.) My mission is to find out about Dr. Riddle's top secret plan, Project Locket, and attempt to stop it at all costs. Many lives are at stake. I pray I do not fail.

Thanks for reading. Who caught the Doctor Who reference?

Review please?