Mini teaser for The Mentalist finale from SpoilerTV:

 

An addition to the finale is the role of Ilsa, who is a multi day co-star in terms of filming. She definitely sounds intriuging as she is in her 30's as well as being a beautiful yet tough hired assassin.

 

The producers envision an Eastern European for the part but aren't limiting their options. Also interesting is that the role is several scenes but none speaking. Intriguing indeed...