Magic made things pathetically easy to get. Harry had discovered that the Trace was so diffused in London due to the sheer number of people.
This was a good thing, of course. It had taken a few hours, but Harry was fast and efficient. He had visited the magical bookstore long before, along with laboratories and retrieved chemicals and the like. At the moment, he was in a rather unsavory neighborhood, having acquired some weapons that would likely have him arrested on the spot if they were seen. He was glad they were under his cloak.
Evening was approaching, the street lamps were on, and Harry was returning to the posh hotel he had stayed at when it happened, just as it had before.
Something had happened to the night. The ndigo sky was suddenly pitch black and lightless - the stars, the moon, the misty streetlamps had vanished. The distant rumble of cars and the whisper of trees had gone. The balmy evening was suddenly piercingly, bitingly cold. He was surrounded by total, impenetrable, silent darkness, as though some giant hand had dropped a thick, icy mantle over the entire small street he was currently on, blinding him.
Harry used his wand, murmuring, "Lumos."
There. A group of Dementors was a bit away, the one in the lead looking at him. How Harry knew that, he didn't know, but he did. "Leave." Harry's voice was calm. "I have no problem driving you away again."
"Wiiiiiizaaaaaard," It was a wet gurgle, a breath forced through a mouthful of... well, Harry had been kissed by it. Dementors did not have a normal mouth, he knew that first-hand. But he hadn't known they could speak. It was logical, though, the Ministry did negotiate with them after all.
"I'm flattered," Harry said sarcastically. "You remember me."
"Always shall I remember you," came the gurgle.
"Lovely," Harry said briskly. "You took the souls of dolts I had no use for and you did something to me. You did your duty, now go."
"You demand, half-breed, but what do you give?" Came the gurgle.
Really? A Dementor had the nerve to insult his background? "I don't know. What else do you want?" Harry asked, partially curious and the other part wanting to be rid of the creature.
"I want... I want..." The Dementor mused. "I want to touch. I want to taste. I want to know what I knew before. I want to know the part of me that is gone."
The creature began to drift toward Harry, away from its fellows, and the knowledge hit Harry in an explosion of fear and rage.
Him. The Dementor wanted him.
"No way," Harry snarled, immediately raising his wand. "No bleeding way."
"Be calm, wizard. I only wish to touch. I miss my green-eyed thrall."
Harry narrowed his eyes. Why did everyone and everything presume he was an idiot? He knew what 'thrall' meant. "I am no one's slave. As for touch, you can touch yourself you foul thing." He raised his wand.
"We will assist you in defeating them."
The Dementor's words made Harry pause. He hesitated and said, suspicious, "Why?"
"You have done more in two days than many have done in years. We are intrigued. We wish to act." The night seemed to shudder with the word.
"Act," the others said, shuddering in agreement.
Harry could relate. But still... Dementors...
Nonetheless, it was a force. Better they obey him than Voldemort, after all. And he could use them, as they should have been used long before.
"... Fine," Harry said, his voice hardening. "You have your taste. Ten seconds."
The Dementor flew towards Harry and opened its mouth. As Harry had thought, its mouth wasn't just an empty gaping hole. It seemed that way, when looking, but it wasn't. Tendrils left and rested gently on his neck. A deep rattling breath, "So unique, your taste, Harry Potter. You taste of bone and blood, of green grass and blue sky... of Magic and Muggle. "
Harry narrowed his eyes but said nothing, simply counting the seconds.
The tendrils didn't curl or grip; the Dementor didn't threaten in any way. At least, not physically. It simply... petted. A light caress, a soft stroking. Harmless, if Harry didn't know what the creatures were capable of.
"Brave wizard," the Dementor said after the allotted time passed. "So brave and different. What do you will?"
Harry noticed the other Dementors creeping closer.
"I want you to Kiss the Death Eaters in Azkaban," Harry said, thinking quickly. It was a simple matter of logic. Voldemort would break his followers out. There would be vicious and powerful people to deal with and support their insane leader. Harry would strike first. He would not allow that threat to escape.
Gurgles broke out. No... not gurgles.
Laughing. They were laughing.
"As you wish."
"And for the two people at Privet Drive," Harry said before they left.
"Your blood?"
Harry knew they couldn't see, so he answered, "Yes. They are detrimental to us."
More gurgling laughter, "As you wish."
The streetlamps burst back into life. A warm breeze swept the small street and the rumble of cars filled the air again. Harry put his wand away and resumed walking. The Death Eaters in Azkaban would be taken care of and no one would be able to force him back into that hell called Privet Drive.
He hadn't anticipated the aid of Dementors in his plans, but they helped. He called a cab and was thinking as he rode back to the hotel. He paid the fare and returned to his room, muttering a notice-me-not charm on the door so that no one would disturb him.
He put out the weapons on the desk, a rifle, a handgun, a few knives and a few different electroshock weapons. Those were the ones he was keenly interested in, the taser and shock prod, because he had wondered. Electric items did not work around Hogwarts, yet they worked in London, where the Ministry, Diagon Alley and Knockturn Alley were all located. Obviously, the concentration of spells and magic did not deter electricity, which meant that there was something particular about Hogwarts that did.
It also meant, to Harry, that the manors that he was going to probably were not protected against Muggle things. And odds were high that if they couldn't detect a simple poisoning, they wouldn't know much about electroshock weaponry.
Harry didn't bother to smile. He was busy working and researching. Because the manors might be like Hogwarts and therefore block weapons like that. He was going to find runes that made that a non-issue.
Then the families of Crabbe and Goyle would be getting paid a visit.