HBO - Game of Thrones SPOILERS INSIDE. you have been warned

[Skelas]

Agreed it might not be The Night King raising the dead, from my understanding it's only Starks down there, and it looks like they are all in big stone crypts, not sure how they'd even get out. BUT! way, way way too many references to the crypts being safe, and in the previews they show a scene where Sansa is having a panicked conversation with Jon saying "The dead are already here!" some shit is going down in the crypts. The Night King has unlimited manpower that doesn't tire, maybe a tunnel? Or there is some unknown entrance of some sort? I guess we'll see sunday.