Harry was freaking out.

Sirius was looking at him, and recognizing him. He had gone six months without being seen, and now before he could finish his task he'd been spotted. As his godfather took a step towards him, Harry turned and ran as fast as he could in the opposite direction. Legs burning, he practically flew from adrenaline. "HARRY!" Sirius shouted from behind him. Risking a glance over his shoulder, Harry saw that Sirius had transformed into Snuffles, and was chasing him at a fast pace. No! I have to outrun him, I have to! I can't be stopped now, not when I'm so close to finding Renwick.

Running at top speed, Harry knew that his puppy limbs wouldn't be enough to outrun Sirius for long. Darting in between people, he ran through the streets of London, turning corners wherever he could in failed attempts to throw Sirius off. Said godfather was advancing on him quickly, and a part of Harry was curious to know what measures Sirius would go to, to get him to stop fleeing. Shaking his head, he fled out of London and back towards the warehouse. I should at least show him what I found…

As Harry was only a few yards away from the rusty building, something hard slammed into him from behind, sending him flying across the dirt. Landing painfully, he let out a whimper as something in his shoulder cracked. Shaking his head, he stood up and held up his wounded foreleg. Looking over to the direction he was hit, he almost fell over at the sight. Renwick had hit him with a blunt-force spell, and was now holding a canine Sirius by the scruff of his neck with his wand pressed to Sirius' forehead. Harry transformed immediately, wincing as his cracked left shoulder reformed into a human one. His good hand grabbed his wand and held it out in front of him.

Renwick let out a vicious chuckle. "Ah, Mr. Potter. After tailing me for sixth months and hiding away from your godfather, you failed to protect him from me."

"Let him go!" Harry snapped; his face flushed with anger. He'd gone too far to lose everything because he did a good deed and saved a little girl. "Let him go and fight me to the death, unless you're too big of a coward." Harry was void of all fear at this point. Seeing Sirius at wand point was only fueling his anger all the more.

A dark look crossed over Renwick's face. "What makes you think you could win against me? You're only a child Potter, uneducated in the art of dueling."

Harry scoffed and laughed menacingly, slightly surprising himself. "Then this fight should be easy for you Renwick. Come on and fight me like the man you wish you could be." Harry held his wand at the ready, watching Renwick with an amused look.

Renwick through Sirius aside roughly and turned his wand upon Harry as he set up a barricade around them, blocking Sirius from intervening. From the corner of his eye, Harry watched as Sirius turned into his human form and was banging on the wall with tears in his eyes. "HARRY! Don't do this!" Sirius shouted as he sent several futile curses at the barrier.

"It'll be fine Sirius," Harry snapped as he turned to face Renwick, tuning out Sirius. "To the death."

"To the death," Renwick agreed with a curt nod. "Confringo!" Harry sent out a blocking spell, and watched Renwick's face as he blocked the curse.

"You've learned some new moves, have you? Don't get to cocky," the Death Eater snapped, anger filling his marred features.

"Incarcerous!" Harry shouted as ropes appeared and wrapped around Renwick. The man cursed loudly and muttered a counter curse, making the ropes disappear. "Stupefy!"

Renwick dodged the spell and shouted "Crucio!" With an ounce of luck, the spell missed Harry. They continued to toss spells back and forth, injuring each other with blasts and curses. Renwick was bleeding from the shoulder and thigh, while Harry was bleeding from the torso and arm. Plus, Harry's cracked shoulder was causing some pain. They circled back and forth while Sirius was shouting continuously at the barrier that blocked him from intervening.

As exhaustion began to fill Harry, a sudden curse came to his mind. Holding his wand out and pointing straight at Renwick, he shouted "Sectumsempra!" It was the first dark spell Harry had cast, but it had a wonderful affect. Several large gashes appeared on Renwick's torso and the man collapsed to the dirt. Blood pooled around him, and Harry felt a bit queasy as the man bled proficiently.

Footsteps approached Harry and he realized the barrier had been brought down. "Harry?" Sirius asked softly, his voice hoarse from shouting.

Harry turned his back to the man. "You lied to me, straight to my face. You told me that he was captured, and meanwhile he's running around plotting the deaths of those I care about. I can't believe that the two men I thought I could trust the most lied to me like that about something so serious."

"Harry…" Sirius croaked out. Harry could practically hear the tears that the older man was shedding. "We did it to protect you. Look what you did when you found out! We just tried to prevent this from happening."

"I need more time," Harry said as he knelt down next to the unconscious Renwick. Reaching down, he grabbed Renwick by the shoulders and used his new ability of Apparation, to Disapparate to the Ministry of Magic with a loud crack, leaving Sirius behind.