It's a good day to be a 911 fan. The long-running procedural series was just renewed by ABC for its ninth season, meaning that Captain Bobby Nash, Sergeant Athena Grant, and so many more of our beloved favorites will be around to entertain us for another year.

That's the kind of news you like to hear, especially as we head into an incredibly intense episode of the series. "Invisible", the thirteenth episode of season 8, looks to put the 118 in yet another life-or-death situation and the stakes couldn't be any higher. Meanwhile, Eddie Diaz will look to take the next step in his recently-repaired relationship with his son Christopher.

If you're ready for what 911 season 8 has in store this week, let's dive into all of the events of "Invisible" now.

A really bad day

We open with a man named Archie. Archie seems like a nice, kind man, but he...