Warning: Spoilers ahead for Doctor Who season 15, episode 2, "Lux."Doctor Who season 15's cast to embark on what is surely to be a very high-stakes journey, but many of the exact details are still hazy at this point. However, a very key piece of information has already been revealed.

Ncuti Gatwa's return as the Fifteenth Doctor pairs him off with a new companion, but season 15 doesn't forget about Alan Cumming's Mr. Ring-a-Ding/Lux Imperator has since been added to the new group of villains, it's tough to believe that there won't be more deities on the way as Doctor Who season 15 progresses. If there are, it would make perfect sense for them to arrive on a specific date - both in the real world, and within the show's canon.

According To Doctor Who, The World Ends On The Day Season 15's Penultimate Episode Airs

Mrs. Flood provides an exact date

At the end of "Lux," Mrs. Flood (Anita Dobson) points at the Doctor's TARDIS as it dematerializes and says, "If you want to see a good show, darling, I can recommend this one. Better warn you though, limited run only. Show ends May 24." It's unclear whether Mrs. Flood is referring to the destruction of the Earth, the death of the Doctor, or something on a far larger scale. Regardless, the date already held significance even before this scene.

Mrs. Flood isn't just mentioning a throwaway date, but one that does what she does so often and breaks the fourth wall.

Looking at Doctor Who season 15's release schedule, May 24 is the date that episode 7, "Wish World," is set to land on Disney+. So, Mrs. Flood isn't just mentioning a throwaway date, but one that does what she does so often and breaks the fourth wall. Although she provides a solid date, the wording of her final line in "Lux" is frustratingly ambiguous, but it essentially confirms the occurrence of something very notable. With rumors circulating that Doctor Who season 15 will be the show's last outing for a while, Mrs. Flood's "limited run" comment feels especially poignant.

"Wish World" Now Looks Like A Very Important Doctor Who Episode

"The Reality War" arrives the week after "Wish World" to conclude season 15

While "Wish World" had already caught my attention because of its interesting title, the fact that Mrs. Flood has highlighted it in such an ambiguous way has made the installment feel even more important. What I find the most compelling is the fact that I would typically expect Mrs. Flood's tease in "Lux" to be in reference to the season finale, and not its penultimate episode. So, whatever catastrophic event is coming is scheduled to happen with one episode left to go in Doctor Who season 15, which begs the question of what the finale will look like.