Sister #1 is a fictional character portrayed by Alexa Gonzalez in the TV series Criminal Minds.
They appear in 1 episodes out of a total of 339 aired so far
Episodes1
Faceless, Nameless
episode S5.E1 september 2009A man is threatening to kill a doctor's son and is killing a man a day until he is successful. Meanwhile, Hotch's absence is noticed by Prentiss.