Horcruxes were lesser-known things, but Draco knew about them from his father's library. A soul-carrier. Draco was loathe to admit he was a bit fascinated by how the Dark Lord essentially achieved immortality for a short time. But the other side... how did Potter achieve it? He twice survived the Killing Curse. He mentioned love had saved him... and how using Draco's own wand, the wand that was currently in his hand, had overpowered the mythical Elder Wand.
He couldn't really doubt what Potter said, as he spoke to the Dark Lord as if they were old buddies. He called him 'Tom". How... strange that was? Draco had hoped and prayed to any divine being that Potter would win that day, as Potter and Dark Lord circled each other. He prayed for his freedom, despite being branded his servant. Draco resisted glancing down at that mark as he pretended to read, lost in his memories.
Potter mentioned the Elder Wand, too. That Dumbledore had the Elder Wand, and Draco had ripped it from the old Headmaster before Snape killed the defenseless man in front of him. Another thing Potter revealed at the end was that one of the worst memories Draco had was a setup. Watching his godfather kill Dumbledore in front of him was horrifying. They planned to kill him in front of him and Potter. That f'n hurt. More so for Potter, he assumed. He actually liked Dumbledore, but Draco had never been the same after that.
Of course, the Dark Lord punished him severely for it, within an inch of his sanity, for refusing to become a murderer. He understood why Harry had fallen into the same downward spiral that he had fallen into after he became disillusioned with everything he believed in. Draco wasn't too prideful to admit that potion abuse wasn't just something Potter did, but he fell into it, too. The end of the war stopped his abuse thought. He was just as scared of dementors as Potter is-was and sitting in a holding cell waiting for Azkaban broke him. He never touched potions, again.
He glanced up at Potter. He wondered if he should tell what happened, bond with him, but something told him that he wasn't ready. He was too angry, too hurt for the words to reach him. If Draco had to guess, he would be drunk or high within an hour of being released. Potter was probably going to have to rehab to quit at this point. Draco had been forced to quit when he was arrested and held for his trial.
Potter glared back at him. "What?" he mouthed.
"You're not going to make anything easy, are you?" Draco said, aloud.
Potter raised an eyebrow and smirked. Game on, he would probably say.
"This isn't a game, Harry. I'm not the Aurors. I'm not after you to hurt you. I... I want to help you."
Potter snorted and glared harder. He shook his head. Potter didn't believe him.
"I'm sorry I sent the Aurors after you, but I'm not breaking into your home to fetch you understand?"
Potter shrugged.
"You will report back here at 10 in the morning tomorrow or we get a repeat of today."
Potter shook his head. 
"Hey, if you want to sit in my office every day, all day... fine. At least I know where you are and that you aren't breaking the law."
The Chosen One sighed and crossed his arms. Potter was too impatient to handle hours of doing nothing in his office. Today was different, though. Draco had appointments to keep so he stood up and looked Potter up and down.
"Did they walk you down here like that?" he asked. At least the Aurors had a private entrance for bringing in arrests. They would be seriously reprimanded if they used the main lobby, but that didn't mean that he wasn't dragged through the whole Auror department, in his pajamas and high as fuck. It might not have mattered when it happened, but Potter was stone-cold sober, now.