Who plays Diane on NCIS? Melinda McGraw returns, Joe Spano plays Fornell
The NCIS cast is going to see some familiar faces for the Season 16 finale. Called “Daughters,” Season 16, episode 24 is going to feature a lot of people from Gibbs’ past. Actor Joe Spano returns in the role of former FBI Agent Tobias Fornell. Actress Melinda McGraw also returns as Diane Sterling. The character