Krystin is one of two assassins hired by Sarevok to kill the grand dukes of Baldur's Gate in chapter seven.. She can be found in the Undercellar in chapter seven along with her husband and partner Slythe. She is initially invisible and will remain so until the start of combat. She accomplishes this via a ring of invisibility but it cannot be looted from her body. At the start of combat she is likely to cast Mirror Image and Minor Globe of Invulnerability.