Suddenly the siren started again.

This time it wasn't Hank's cell phone though, but Kevin's.

Speechlessly the teenagers stared at what had been their mentor up to a minute ago.

"That was you?!" stuttered Hank finally. "You sent me that worm?"

"What did you do that for?" asked Ivan cautiously; he was never one to jump to conclusions.

"Just for fun," answered Kevin, tossing Hank a car key.

"Thought you might like some fun tonight. I brought us the sugar as well. Bet you want some. I've gotta go."

Of course Kevin had to go. He wasn't wearing gloves because of the temperature, but to keep his prints off the car keys.

If they let him go now, there would be no tomorrow.

"He framed you, Hank," said John quietly.

Of course the junior skinhead wasn't quite ready to believe a complete stranger. Uncomprehendingly he stared at the key in his hand.

Considerate Ivan approached Reese. "Why do you say that?"

Reese showed him the picture Finch had sent to Hank's smartphone.

Ivan understood. "Kevin parked the Fiesta in front of Hank's parents' house!"

The three boys stared now angrily at their former "friend", but they still didn't know what to do.

"Grab him!" ordered Reese.

Over the last hour his orders had made sense, more than Kevin's. Without further thought the boys complied.
They tried to push Kevin against the wall.
The man had no intention of letting himself be pushed around. He grabbed what was within reach – the edge of the small table. It toppled over. Food, the remaining coffee, Ivan's letter and the basin with Mario's water slipped over the edge and to the floor, creating a chaos.
Hank slipped and landed in the middle of it, mixing it nicely. Quickly he picked himself up and helped his friends with obviously increased anger.

Finally they managed to pin Kevin to the wall.

"And what now?" asked Ivan.

It was a good question indeed, as Reese was fighting hard to stay conscious again.

Instead of an answer Ivan and his friends got their next shock. The door was pushed open and the barrel of a gun appeared.

"NYPD!"
Detective Fusco put his head through the door and rolled his eyes. He was looking at the usual mess when Mr. Tall, Dark and Destructive had been at work. With the slight difference that the blood seemed to be exclusively his this time.

"Could anybody please tell me who the good guys are and who the bad ones?"

He halfway expected that everybody would claim to be innocent, which was probably about 100% wrong. He couldn't arrest five people at once though, having only one set of handcuffs.
Before he could scratch his head in earnest, the door behind him opened again.

"Detective, I suggest you arrest the man over there. His name is Kevin Mills and he is the driver of a Ford Fiesta which caused a hit and run accident with personal injury about two hours ago. I suggest you test him for drugs as well. And if I'm not mistaken, the white powder in the air and on the jumble on the ground is cocaine, and it's his."

Finch had done his homework. Based on that, Fusco would be able to build a solid charge.

Now that his duty as an upright citizen was fulfilled, Finch took a quick step over the dirt to get to his employee.
Worried he noticed that John's stomach wound was bleeding profusely. The man was much too pale and quiet for his liking. He would need the coroner's services once more, and the boys' help to get John into his car in the first place.

Fusco slapped the handcuffs on Mills' wrists. He led him towards the door, then turned around, wrinkling his nose. "It's always the same. Detective Sunshine doesn't even have to clean up his mess afterwards, because we need to examine the crime scene tomorrow."

The three boys' eyes had become wider by the minute. They could hardly believe that they weren't charged.
Slowly they started to understand that they owed the mysterious stranger on the ground for more than a little good advice, a translation and some IT support.
They would definitely have to think about their future because of this man. And they didn't even know his name.

For once Ivan was the fastest to get his wits together. He bent down to the half-conscious man. "Thank you, Sir."

"We let you bleed instead of helping you but you saved us," confessed Mario.

"You are my hero. Who are you?" a very impressed Hank wanted to know.

Reese opened one eye and tried a pale grin. "My name is John."

Author's Note:
Ok, this was just a short first try. Thanks to those who read it and encouraged me!