Returns: Tuesday, April 8, at 8 pm/ET (CBS) Number of new episodes: 7 Where we left off: Inspec­tor Leroy Jethro Gibbs (Mark Harmon) realized he had an ongoing conflict with agency director Jenny Shepard (Lauren Holly); icy agent Ziva David (Cote de Pablo) developed a fever for wise-cracking agent DiNozzo (Michael Weatherly); nerdy agent McGee (Sean Murray) tried getting closer to Abby (Pauley Perrette), the goth girl in forensics. What's next: "We've had flashbacks to a relationship that Jenny and Gibbs had in Paris while they were working undercover," says executive producer Shane Brennan. "Now the secret past will come back to haunt them, leading to an emotionally devastating two-hour season finale." Watch full episodes | Photos | More Returning Favorites coverage