Rex spent some minutes gazing into the astral with his eyes closed. Not far from him, his partner, Waywalker knew enough about magic to recognize the small changes in the air or the barely visible weird glow emanating from his dog eyes. The decker was certainly hoping for the dog shaped mage was more successful than he was.
He already rebooted once his deck and try to again, just to be sure he was not getting anything wrong. According to his scans, there was nothing close to a host anywhere near the small house. Actually, the all thing looked completely dark in the matrix. Out of desperation, Waywalker even ran a diagnostic software on his deck antennae. Until the answer finally came to him.
A fragging Faraday cage. This all building was shielded in such a way to create a freaking Faraday cage. No signal from the outside could get in, neither anything inside could get out. The only way they could have access inside the mansion would be to use some wired infrastructure from the last century... Well, last decades, but still...
Looking at the building, in the real world, carefully, Waywalker now saw that all the windows were actually fake, painted over white bricked wall. The only opening appeared to be the main door. A fancy, nice looking, old door, that has clearly modified to not break the Faraday cage.
In the astral, Rex was not getting more lucky than his partner. At least, at first. With his assessing skills, Rex could feel the secretiveness of the place, how the all mansion felt almost... removed from the surrounding streets because of it. A bit more deeper into the astral, his nose catch a whiff of the raw sexuality happening in the place. He got a small taste of the customers excitation, being teased by the tenants, his ears suddenly filling up with noise of moaning and perky laughter....
He got so distracted by what he was sensing that he almost missed it. Next to house, there was a glimmer in the astral, some unidentified aura that seems to be wrapped into the wave of emotions pulsating from the brothel. As Rex focused his attention to the aura, trying to get a proper read of it, the glimmer suddenly took shape into the astral, the shape of a translucent, young woman. A beautiful, human one - with long blond hair falling into her back, and just wearing an old fashioned (not revealing at all by this century standard) nightgown.
Her soft eyes landed on Rex's astral form, questioning him and his presence without muttering a word...
[ Spoiler ]
@Jack_Spade don't forget that Assessing is for reading aura, not to see "things" in the astral. For that it is regular Perception. (then you can spot something and then decide or not to assense it....In this case I assumed you succeeded in your Perception test enough to spot this aura.