Arnold

Arnold was a character deleted from the scenes of Season 5.

Season 5 deleted scenes
Bill Buchanan, walking in the upper level of CTU, gets a call from a CTU staffer who says a Detective Arnold from the LAPD urgently needs to speak to Lynn McGill. Buchanan takes the call himself. The detective is at a crime scene, and asks to speak with Lynn specifically. Bill simply tells him that Lynn cannot take calls currently, so Arnold tells Bill the news: Lynn's sister Jenny McGill has been murdered alongside Dwayne Thompkins. He notes that these were professional murders given the circumstances. The corpses of the two victims are seen, and a witness (a young boy with a football) is being questioned outside. Bill says he will call back, and looks off pensively.

The scene was deleted because it was deemed unnecessary: Bill reveals that he got this call to Lynn later, and the editors thought this was repetitive.