Siren stood still in the alley way, listening for any signs of him. She'd been tracking this man for a few weeks, following her main assignment, while following her minor ones as well. Her wings spread out behind her, and she shook them restlessly. Siren was an angel, sent down to Earth to take out all evil, and the main source was the man standing a few feet away. She couldn't kill him yet- she didn't know him well enough.