Disclaimer: I am not JK Rowling, nor will I ever be.

The full moon beat down on the pavement, revealing the silhouette of a small, cloaked figure. The figure looked at her surroundings and quickly walked to the doorway across the street. She placed the bundle she carried on the step, far enough from the door that it would not be hit by any careless opening. A gleam of silver-blond hair — hair that matched the longer hair of the woman — could be seen peaking out of the black swaddling cloth, framing a tiny, pale face. The woman laid an envelope labeled "To Mr. and Mrs. Granger" on the bundle and whispered "Goodbye, Draco." Then she turned, walked away, and vanished with a crack like lightning.

About a year later

There was a knock at the door and Vernon Dursley shoved young Harry Potter, who was barely past a year old, into the storage cupboard with a hiss to be quiet. He opened the door with a gruff "Yes?" only to find two suited officials, one man and one woman.
"Hello, Mr…" the woman checked her clipboard, "Dursley. We're from Child Services. It has come to our attention that you have recently gained custody of one," she checked her clipboard again, "Harry Potter. We just need to make sure that you're treating him properly, standard procedure, nothing to worry about. May we come in?"
"Of course." Vernon replied with a nervous chuckle. "Just… wait in the kitchen, I'll get the boy."
The officials nodded and went in the direction he showed them, eyeing him suspiciously.
Vernon hurriedly unlocked the cupboard door with a hiss of "Out, boy!" and little Harry scurried out of the tiny space. Vernon put a hand on his shoulder, at which Harry flinched, and forced him into the kitchen. "Here he is. Tiny little thing."
"Yes…" the other man agreed. "But isn't he thin for his age?" This was an understatement — in the few short weeks Harry had been at his aunt and uncle's house he had lost nearly half of his body weight.

"He's a bit scrawny, yes. It's nothing to worry about." Vernon clapped Harry on the shoulder and the young boy winced, then nodded in scared agreement.

The woman narrowed her eyes, seeing the flinch.

"Are you alright, Harry?"

Harry nodded quickly, eyes wide. He glanced up at his uncle to make sure he was doing the right thing, then nodded again.

"Come here." The lady commanded softly, beckoning to Harry. Harry timidly walked forward until he was just out of reach of the lady. She beckoned again and he walked a little bit closer, enough so that she could reach him. She took a hold of the shoulder of his shirt and pulled gently down, revealing large purple bruises. She took a quick intake of breath and drew her hand back, whereupon Harry stepped back out of reach again.

"Mr. Dursley, why has his shoulder not been looked at?" the man said, looking through the papers for any record of a doctor's visit. There was none.

"Um, well, you see…" Vernon blustered, trying and failing to come up with an answer.

A few minutes later, the man was leading Vernon out to the car in handcuffs while the woman stayed with Harry. She would wait with him until Petunia came home with Dudley, then it would be off to the orphanage with the two children while Petunia went the same way as her husband: straight to jail.