Other mistake: When Paige is talking to her charge in the club the same guy walks behind them twice in the scene. (00:14:00)
Continuity mistake: In this episode they say an alchemist has the power to control the dead but not bring them back to life. However, in the season three episode "Coyote Piper," the alchemist brings both the body in the alley and Piper back to life.
Continuity mistake: When Paige is at the bar with her newest charge we see the same extra walk by 3 times, going the same direction each time.
Answer: "Hush, Hush, Hush" Paula Cole.