TVGuide.com's Senior Editor Matt Mitovich reports exclusively that Ralph Waite (The Waltons, Cool Hand Luke) will guest-star as the father of NCIS' Leroy Jethro Gibbs (Mark Harmon) and give some rare background about the enigmatic special agent.
"Taking Gibbs back to his roots was something we've talked about doing for some time," executive producer Shane Brennan tells TVGuide.com. "It was an easy creative decision to make, but a challenging story to tell."
Read the full story on TVGuide.com:
Photo courtesy of TVGuide.com