Last month, my roommate and I tried an Insidious marathon right after I wrapped a late-night horror game stream. We started with The Last Key because it was on HBO Max, not realizing it’s a prequel to the 2010 original. By the time we got to the first movie, we were confused about how Elise’s backstory fit with the Lambert family’s plot. Turns out there are six total films, most streaming on Peacock, and watching them in release order would’ve saved us 20 minutes of bickering over timeline holes. I even pulled up the correct order mid-marathon to prove my point, rigor applies to horror marathons too, okay?