CHAPTER FOUR: KILLER
The engraving depicted a large letter 'W' next to a drawing of an extremely plump man wielding a knife. The body was not a real body, but rather a straw-stuffed imitation of Mario, with a real blade sticking out of its middle. Everyone had heard Peach's shriek, and gathered in the bathroom to see what happened. Mario consoled the frightened princess while Shy Guy chuckled mysteriously. Wario shouted in horror and cried out for whoever had done this to reveal themselves. Luigi was even paler than usual and soon exited the bathroom to try to open the front door again, to no avail. Waluigi was quiet in the corner, his eyes often darting to the knife impaling the fake Mario.

After a few minutes, everyone started to calm down. Toad noted that two people were missing from the room… Luigi had gone to try and escape again, he knew that. But who else was missing? Not only that, but the Mario dummy… the knife was gone.
"Oh no…"

Toad ran out of the bathroom and skidded to a halt in the entrance hall. Luigi was twisting the doorknob furiously while a tall shadow lurked from behind a wall. The shadow silently crept toward Luigi and raised its arm. The knife glinted in the grasp of a gloved man.
"NOOOO! LUIGI! LOOK OUT!" Toad warned him, but it was too late. Waluigi's purple figure was revealed as he plunged the knife into Luigi's chest just as he turned around. His blue eyes were frozen with pain as blood spurted on Waluigi's black overalls. The tall man grinned with demented pleasure. He had defeated his foe at last.

The others had heard Toad screaming and rushed to the entrance hall where they met the scene of Luigi's bloody body crumpling to the floor and Waluigi laughing maniacally with a red knife in his hand. Peach turned white and nearly fainted as tears poured from her eyes. Mario shook with fury.
"YOU!" Waluigi looked up, his smile slowly fading. "YOU MONSTER! YOU KILLED MY BROTHER! I'LL KILL YOU, WALUIGI! I'LL KILL YOU!" Nobody held Mario back as he rushed, defenseless and unprepared, at the blade-wielding Waluigi. He had only meant to murder Luigi, but as an act of self defense, he held his knife ready as Mario came at him.