The tiny detail in the 'Game of Thrones' Ep 4 trailer you may have missed

The 30-second Game of Thrones preview videos don't often give a whole lot away.

Every now and then they do sneak in an exciting detail or two, though.

Last night we had a couple. First there was that snowy shot of Arya contemplating Winterfell from a distance, and then -- right at the end -- there was the shot of Drogon.

Nothing massively exciting about yet another dragon shot, of course, but if you look closer at the image the whole thing becomes way cooler.

Yep: as Redditor vanceco pointed out, if you look really closely there appears to be a blonde glint on Drogon's back.

It's impossible to be 100% sure from the video, but we can be fairly sure that what we're seeing is a shot of Daenerys riding the mighty brute into battle, seemingly confirming an earlier theory that was teased in a preview photo before the season began.

Some Lannisters are going to cook.