9. Doctor Sleep 2 'Hallorann'
We're kicking things off with Doctor Sleep 2 because, technically, it hasn't been officially cancelled yet, but after the first film's underwhelming box-office run so far, the general consensus is that a sequel is basically dead in the water.
In early November, a box-office report from The Hollywood Reporter contained a small nugget about the future of the Doctor Sleep/Shining franchise, with the site stating that Warner Bros had already put a third film - with the working title Hallorann - into development:
"Warners was so keen on Doctor Sleep that movie studio chief Toby Emmerich had already struck a deal with director Mike Flanagan and his Intrepid Pictures to script a sequel whose working title is Hallorann, drawn from the character who appears in both The Shining and Doctor Sleep."
Now, it's still early days for Doctor Sleep and it could very well have some strong legs thanks to its positive word of mouth, but if its commercial appeal continues to falter, don't be surprised if Hallorann is never seen through to completion.