This show has no logic and every character in this show is simply unintelligent. It's not the fault of the actors -- they did a great job. It's simply because of the poor script writing.
**Spoiler Alert**
It's like a 5 year-old knows how to fight and drive could become a undercover cop and win the trust of a crime gang, which CIA (yes, CIA) tried real hard to plot against. It was real easy for Erin to kill someone while Erin would never die even if she was shot in the stomach and be left in the middle of nowhere. Apparently, it was also real easy to kill someone without be on cops' radar -- they simply do not care. A body was left on the street and there was no further development after that. No one call the police nor a single police bother to investigate the death. Watching this show is a huge waste of my time.