Finding out about the future - A Shadowhunters and Harry Potter crossover

Chapter Thirty Nine - Hail and Farewell

[APARTMENT BUILDING, ROOF TOP]

[Sebastian is screaming again and again. He punches the wall over and over. All out of anger.]

"Jesus" said Ginny, blanching.

[SEBASTIAN'S APARTMENT]

[Valentine is going through some papers, when Sebastian enters.]

SEBASTIAN: We need to leave.

VALENTINE: What happened?

SEBASTIAN: [grabbing stuff] My position within the Institute was... compromised.

"Valentine is not gonna be happy about that" said Jace.

VALENTINE: Where's the Mirror?

[Sebastian takes the Soul-Sword and doesn't answer Valentine. Sebastian walks past Valentine, but Valentine grabs his wrist.]

VALENTINE: I said, where is it?

SEBASTIAN: Clary, uh, took it from me.

VALENTINE: You know, in all honesty, I would have figured Jace to be the only Shadowhunter capable of giving you a run for your money. [Sebastian pulls himself loose, leaving the Sword with Valentine.] It's only a matter of time before the Institute comes breaking down that door. [putting the Sword over his shoulder with a strap] See, I wonder... I wonder how they learned where you live, huh?

SEBASTIAN: [turning to Valentine angrily] Okay, being discovered wasn't part of my plan! But killing you, it was.

"Looks like he has a problem with follow through" said Jace,

[Valentine grabs Sebastian by his shirt.]

VALENTINE: Then it would seem you have some issues with follow-through. Doesn't it?

Jace paled. Everyone else looked shocked and uncomfortable.

[Sebastian pulls away.]

[STREETS]

[Izzy, Laina, Jace, and Clary are heading for Sebastian's apartment.]

ISABELLE: Clary, don't.

CLARY: No, I knew there was something off about Sebastian, or Jonathan. I... I should have never second-guessed myself.

"It's not your fault" said Izzy "He tricked all of us"

"Thanks" said Clary.

JACE: He would have found his way into our lives one way or another. The only thing that matters now is taking Jonathan and Valentine out.

[SEBASTIAN'S APARTMENT]

[Laina kicks open the door. They all go in, blades ready.]

Fred let out a low whistle "That was badass"

ISABELLE: Jonathan

[They see a figure sitting in a chair, his back to t000hem.]

JACE: Turn around and face us.

ADELAINE: Where's Valentine?

[When the figure doesn't answer, Izzy puts her spear forward and turns the chair. It's Sebastian, with black eyes and black lips, dead.]

"By the Angel" sighed Alec.

CLARY: What, did Valentine kill him?

ISABELLE: He's been dead for days.