Isobel Castille, the Special Agent in Charge on "FBI," collapsed at the end of Season 7 due to a brain bleed caused by a terrorist attack at the FBI headquarters. She was found to have no pulse and was in critical condition. In the Season 8 premiere, it is revealed that Isobel survived an emergency craniotomy surgery and is still in the hospital recovering. The showrunner confirmed that while Isobel's condition was very serious, she remains the central figure of the team and is expected to make a return to work after her recovery. The team is shown dealing with the aftermath of her near-death experience and the loss of another team member, Dani. Isobel's recovery and its impact on her personal life and role at the FBI will be explored in the new season, but she continues to be the steady heart and soul of the 26 Fed office.