The first Saw film was a largely self-contained story of two men being put to the ultimate test in a horrific game of survival. As the franchise continued, though, any simplicity went right out the window. With each new Saw movie, save for soft reboot Spiral, the lore became more complex and complicated as new events were introduced leading up to and after that first film. Now, with Saw X, the creative team has returned to one of the most ridiculously detailed mythologies in film and--not surprisingly--it's not always easy keeping things straight.

Saw X, the 10th movie in the franchise, is somehow set a mere three weeks after the first film. Sure, star Tobin Bell has aged 20 years since that movie, but his character of John Kramer/Jigsaw remains a 52-year-old man suffering from terminal brain cancer. When revisiting events that have been unspooling over the course of two decades, making sure the timeline adds up is no easy task. According to director Kevin Greutert, though, there's also nothing more important.

"You have to really do your homework when you make a Saw film and try to think things through and obsess on the details," he told GameSpot. "There are lots of ways to make little mistakes that the fans will catch and you'll never hear the end of it."