Spider-Man swung through the city in search of his latest adversary, Venom, whom he fought earlier that night. He searched throughout the city but couldn't find anything. He was about to swing back home when his police-grade equipment registered a silent alarm going off at a convenience store. He touched down at the convenience store and found much to his surprise that the robber bore a striking resemblance to the man who killed his uncle. He wasn't going to jump to any conclusions until he saw the man's left wrist.
"There's a star tattoo on his left hand." he remembered the police officer at his house saying the night Uncle Ben died. Spider-Man pushed the man up against the wall and pulled back the left sleeve of his shirt. He looked at the wrist, he clearly saw a black star.
"You," said Spider-Man, "you killed him!" He threw threw the man down. He tried to escape down the alley, but Spider-Man followed him. He threw punches and kicks and shot webs at him, sometimes drawing blood. He was flat out whaling on this man until he came to his senses and stopped.
Why am I trying to kill a man again? He thought. Then he turned the man over to the police.
"If it's okay to ask," said Spider-Man, "who is he?"
"His name is Cletus Kasady," said the officer, "a serial killer guilty of 11 murders and a prime suspect for 12 others. His most recent murder was that of Benjamin Parker in Queens in March 2012."
"Okay, thank you officer." And Spider-Man swung away, not noticing the black splotch near a cut on Kasady's right arm.