Georgia:

The Happy Face Killer

Episode sources:

1. LA Times article by Associated Press

2. Daily News article by Martha Bovsun

3. BBC article by unknown

4. ABC News article by Eric M. Strauss, Joseph Diaz and Lauren Effron

5. Mental Floss article by Bess Lovejoy

6. Rolling Stone article by Laura Barcella

7. Happy Face Presents: Two Face podcast

Karen:

The revenge of Miriam Rodríguez

Episode sources:

1. New York Times article by Azam Ahmed

2. The Guardian article by David Argen

3. Mexico News Daily article by unknown

4. SocialistWorker.org article by various contributors

5. Wall Street Journal article by José de Córdoba and Juan Montes