FBI hinted at Isobel's possible death and the season 8 premiere did kill a character off - but with a twist. During the show's return on Monday, October 13, Isobel's (Alana De La Garza) fate was left unclear until the end of the episode. After Isobel collapsed following a bomb scare, it was concluded that she suffered a brain bleed that required an emergency craniotomy. Isobel survived the surgery and was on the mend as viewers realized there was someone else in danger.