|Sibling(s):||David Petrovic (brother)|
|Death cause:||Shot by Jack Bauer|
|First episode:||Nightfall #1|
|Last episode:||Nightfall #5|
Anna Petrovic was the sister of David Petrovic.
Her first appearance occurred shortly before 9:17 p.m. Eastern time / 3:17 AM Local with her brother. Soon after, she and David were witnesses to an attack on Jack's Delta Strike Team by Serbian authorities. Anna came out of the attack fine - her brother, David however, was shot in the arm while trying to block Anna from the gunfire.
The Petrovics then drove Jack and the Delta Strike Team, planning on reaching their first contact, Jovan Tesla who, according to the Petrovics, was part of Victor Drazen's inner circle and was willing to sell him out for immunity. She distracted the post guard Andrija Telsa so the team could get past a checkpoint. Once they reached Jovan Tesla, Bauer's team was attacked by a rocket launcher, and her brother, David, was killed. Despite this, she continued to prove help for the Delta Strike Team.
However, Anna turned out to be working for Drazen after she killed Alexander Lepenski, a fellow traitor the Strike Team. She was worried he was going to divulge information on Drazen that should be kept secret. She then killed Al Crenshaw and Ronnie Pope, and injured Stephen Saunders. Jack shot her before she could kill anyone else. She told him that David died when he betrayed their cause, not when he was shot.