Can you spot the counting error?

From the introduction to tonight's Heroes:

Previously, on Heroes: five strangers across the globe begin to discover they have extraordinary abilities. From the cheerleader who realizes she's invincible, to the artist that can see the future in his paintings; the single mother with the deadly alter ego; the two brothers who realize they can fly; a police officer whose special powers get him into trouble; and the office worker who teleports to New York and sees a vision of their future.

Wait, how many strangers? Does one of them have the power to change what numbers mean?