Mistake!! Please Do Not Unlock

Quickly, the scientist and his young lab intern Hael quickly got to work.

The smell of chemicals and the clanking of test tubes, with serum mixing together, mixed with the event of rapid color change in chemicals, created quite the show of lights in the room.

Quickly, nine hours passed, with the sun rapidly retreating, giving way to the silver moon in the sky.

Soon, Professor Cygnus finished a phase of his experiment. His eyes moved to the window, where he saw the sky was already dark. He then turned to Hael, who had just finished rinsing off test tubes.

"Well, let's call it a day here, boy. You have classes tomorrow," he said to him as Hael wiped off his hands with a handkerchief, giving a slight bow before heading towards the exit.

But he suddenly stopped at the door.

"Um, Professor Cygnus..."

"Uh-huh?"

"Can I be sure I won't be faced with another attack tonight too? I'm the only one in that area, you know, and I'm afraid..."