NCIS Season 10 Episode 9 Devil’s Trifecta Photos : “Devil’s Trifecta” – Gibbs teams up with FBI Agent Fornell on a joint NCIS/FBI investigation after Fornell becomes the target of a shooting, but they face an unexpected twist in the case when their mutual ex-wife, Diane Sterling, gets involved. Meanwhile, rumors run wild among the group after Diane stays overnight at McGee’s, on NCIS,Tuesday, Dec. 11 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Joe Spano (“Hill Street Blues”) reprises his role as Senior FBI Agent T.C. Fornell and Melinda McGraw (“Men of a Certain Age,” “Mad Men”) returns as Diane Sterling.
