Despite what confused non-fans on the internet say, the series finale of "Lost" is actually pretty straightforward. "I'm real. You're real. Everything that's happened to you is real," an afterlife limbo version of Jack's dad, Christian, tells him as the mystery of season 6's "flash-sideways" begins to come together. "All those people in the church, they're all real too," Christian says, explaining that the bulk of the show actually happened years earlier, and now, these characters have found one another in a collective afterlife. It's simple: everything's real, even and perhaps especially death.

This is a heartfelt message that got driven home a bit too hard during filming on "The End," when something else — a prop knife — turned out to be real, too. In an interview with ComicBook.com in 2021, episode director Jack Bender and co-star Terry O'Quinn recalled a particularly intense moment on set, in which O'Quinn accidentally got his hands on an actual,...