When a television season is ending and there are plans for it to return, viewers can rest assured that there will likely be a cliffhanger. At the end of FBI season 7, the CBS series left fans on the edge of their seats after Isobel Castille collapsed, and her fate remained completely unclear when the end credits began.
Since then, FBI fans have learned a lot about the plans for the show's future. As exciting as it was for viewers to learn that FBI cast a Law & Order: SVU actor for season 8, the show's viewers mostly want to know about what will happen to Isobel. As a result, there was a lot of concern when a press release hinted that there might be bad news about the character's fate. Now, comments from FBI's boss arguably could be even more upsetting for fans who are invested in learning about what will happen to Isobel when the show returns.

FBI's fans will have to wait even longer to learn if Isobel will recover
In September 2025, TVLine published a preview of the upcoming fall television season. For that article, the outlet spoke to FBI's showrunner, Mike Weiss, about the plans for the popular crime drama series' return. While the show's boss obviously didn't reveal whether Isobel will make a full recovery, he teased when fans will learn what will happen to the character. Unfortunately, Mike teased that the truth about Isobel's fate will be revealed later than expected.
"“We definitely want to make you wait.”"FBI showrunner Mike Weiss
During FBI's season 7 finale, Special Agent in Charge Isobel Castille sustained a head injury due to an explosion. After the character's injury went untreated, she wound up dramatically collapsing. Now, based on the comments from FBI's boss, there is no telling when viewers will learn whether Isobel will recover. Mike's comments were so unspecific that Isobel's fate could even be revealed later during season 8's premiere episode. Hopefully, FBI fans won't have to wait longer than that, though Mike's comments suggest they probably will.
While it is unclear when FBI viewers will get the answers they have wanted for months now, one thing seems extremely certain. Fans almost certainly will be very frustrated if they have to wait very long to learn what is going on with Isobel.
These days, viewers are much more used to binging shows one season after another, and many of them almost feel like they are owed instant answers. With that in mind, delaying FBI's big season 8 reveal certainly seems like a significant risk for the series. Hopefully, the showrunner's plans, whatever they are, will pay off for fans and the team behind the series in the long run.