Nancy Cahill was an undercover CIA agent posing as a professor in a University in Amsterdam. She was the wife of Jason Cahill.
While she was teaching one of her classes, she heard a phone ring and thought it was one of her student's, when it actually was her own. Nancy panicked for some odd reason and left the classroom. She then began to see a bald thug holstering a silenced pistol. Thinking he was trying to kill her, she held out her own. One of her students came out of class and she became delirious, saying random phrases in German. A few seconds later, she abruptly pointed the gun under her chin and shot herself in front of the student.
It was later confirmed that she was infected with a powerful drug that made her hallucinate.