My sanctum sanctorum.

It's my sanctum sanctorum.

This is my sanctum sanctorum.

However... each dimension has a gateway, one that leads only to this place: the sanctum sanctorum.

Are all the recruits invited up to the sanctum sanctorum or just James?

So this is it, huh? This is the... the Galweather Stearn sanctum sanctorum, huh?

So, uh, this is your old place? 221B is my original sanctum sanctorum.