5x01 Bury Your Dead.
Tony was almost killed by bubonic plague from a biological attack on NCIS.
Season 2 Finale - Episode 'Twilight' - Aired on May 24, 2005
It is never specified what the illness was.
We don't know yet as season 7 of NCIS has not yet begun
It is in season 3, the last two episdoes when Gibbs is unconcious.
Tony was almost killed by bubonic plague from a biological attack on NCIS.
No, Tony DiNozzo does not die in NCIS. He leaves the show in season 13 to focus on raising his daughter.
No one, in that episode they were investigaing the shooting of Jenny Sheppard, but she died in a previous episode
Season 2 Finale - Episode 'Twilight' - Aired on May 24, 2005
It is never specified what the illness was.
We don't know yet as season 7 of NCIS has not yet begun
Tony Died in the last but one episode of series 4. It was called bombshell
It is in season 3, the last two episdoes when Gibbs is unconcious.
Jenny Shepard died season 5 episode 18 "Judgment Day (Part 1)"
Mike Franks died. He was stabbed by the Port to Port killer after calling him out on a dark rainy night. He died in Gibbs' arms.
SWAK, and its Pneumonic Plague, not Bubonic.
No. As per the character Tony DiNozzio, his mother died long ago when he was a small boy. He was brought up in boarding schools by his father. As a result, he has a strained relationship with his father. No other details of Tony's mother are shown or spoken about in the show.