A PUZZLE FOR YOU BEFORE WE START
AFTER THE FLAMES AND BEFORE WE PART
IN THE DARKNESS THERE ARE NO WORDS
THEN SIGHT BRINGS VISION AND NUMBERS CURSED.
What are the numbers?
The numbers were "1428"
There would have been more clues throughout the next episode but the riddle refers to the trailer.
A PUZZLE FOR YOU BEFORE WE START - the trailer being before you started.
AFTER THE FLAMES AND BEFORE WE PART - after the flames in the trailer (which is about 2 mins in), and before the end of it.
IN THE DARKNESS THERE ARE NO WORDS - so when the trailer usually cuts to a dark screen, there would be words in it, for example...
But after the flames, there is a dark screen with no words.
THEN SIGHT BRINGS VISION AND NUMBERS CURSED.
The images that come after the dark screen represent 'sight', then 'the numbers'
Followed by...
There was also this which was more of a hidden clue...
...the time on it being 12:48 and it also appearing before you started etc.