Jace and Izzy had decided to ignore the news and stepped out with their weapons. If they were supposed to be demon hunters, then they needed to join the hunt, or at least that was the rationalization. It was possible that they weren't quite ready, but the excitement meant they needed to get out. They had traced a few runes on each other for strength and speed, and headed down the street, hoping to run into whatever was out there.
As they rounded the corner, heading back to the apartment, Jace caught sight of the dark figures, one definitely smaller, and the other much larger. The little one was pushed out of the way. He heard the scream and broke into a run, knowing that Clary had come out, probably to find him. "Clary," he called, also drawing the troll's attention towards him. He held knives in hand ready for the fight.