Valerie Stone, a name you know well. She is an extremely skilled negotiator that has almost no equal. Almost. One negotiator always outperformed her and was rewarded as she played second fiddle: you.
In this expansion, the Abductor knows all your tricks, she knows the playbook, and she has taken hostages. She's out to prove to everyone that she is the best negotiator...and she is willing to kill to do it.