Nico had to get revenge on Tyson; there couldn't be man killing cyclops running around. It obviously had nothing to do with Percy, except the fact that it did. He wanted to kill Tyson for killing Percy, and he wanted to make it painful and slow. Suddenly Tyson's hand came out and grabbed Nico lifting him in the air. Nico swung his sword, slicing a cut on the cyclops's hand. Tyson bellowed. Nico swung his sword again, this time aiming for Tyson's neck. Then someone called for him.
"NICO! STOP! WHAT ARE YOU DOING?" yelled Annabeth.
"This monster deserves to die! HE KILLED PERCY!"
"Stop! We think he is being possessed!"
"What!? Possessed? Isn't that impossible?"
"No, of course it's possible."
Then Leo, Frank, Hazel, Piper, and Jason ran in. They all froze when they saw the scene in front of them. Some had a look of terror on the face and the others were just confused. Nico stood there. His black sword in one hand, and blood all over him while he was summoning his army of the dead. Suddenly pure fury washed over him. He turned to stare at Tyson. Tyson slowly began to fade, turning into a blur of what looked like gas. The ground underneath him split open and he started to sink into Hell. Then a new voice screamed for him to stop.
"NICO! STOP! PLEASE! I DON'T WANT YOU TO DO THIS!" Piper yelled.
"I'm avenging Percy's death. Don't get in my way." Nico muttered.
Then a loud voice rang in Nico's head. He was pretty sure the others could hear it too, because they were looking surprised.
HELLO, YOUNG DEMIGODS. I'VE BEEN WAITING FOR YOU.
Annabeth froze. Terror flashed across Nico's face for a millisecond. What was that?
he wondered. He knew he heard the voice somewhere.
A giant figure stood on the ground beside Tyson, who seemed to be asleep. The figure was almost invisible like gas, but a thin outline showed that it was there.
Nico froze. He remembered the voice. Tartarus. How…? Why was he like this? Maybe Tartarus had used mist or some sort.
I HAVE COME TO AVENGE MY WIFE.
Nico braced himself to fight. Wait a minute. There was a person standing in a distance, behind Tartarus' almost invisible figure.
"Percy?"