Karen Delfs is a Criminal Behavioral Analyst from the BRIU. She helped the team analyze the behavior of the suspects they interrogate. She even looked through the files of the Jeffersonian team members to know about the people she works with. At some point, she crossed paths with Caroline Julian and Zack Addy in the past. Karen: Oh, my God. I just realized I was so focused on this case that I forgot to eat today.