What is Edna? That’s the question NCIS fans had after Season 23 Episode 17. Now, TV Insider has an exclusive sneak peek of the Tuesday, April 28, episode, and it shows Kasie ( Diona Reasonover) ...

Diona Reasonover gives her take on Kasie's invention becoming a weapon, and how LL Cool J has become her mentor.

Plus, what's coming up in the finale?

Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: CTV Television Network Sullivan’s Crossing Season 3 Episode 8 was a particularly concerning one for fans, as they ...