Nej, eftersom Shrieking Shack ligger i Hogsmeade, inte Hogwarts.
Snape was slightly breathless, but his face was full of suppressed triumph. 'You're wondering, perhaps, how I knew you were here?. he said, his eyes glittering. 'I've just been to your office, Lupin. You forgot to take your Potion tonight, so I took a gobletful along. And very lucky I did ... lucky for me, I mean. Lying on your desk was a certain map. One glance at it told me all I needed to know. I saw you running along this passeway and out of sight.'
" Utan sikte ": Kartan slutade där. Det visade bara föreningarna av Hogwarts och inte bortom det. Den Shrieking Shack är ett övergiven hus i Hogsmeade .
Således såg Snape aldrig Harry, Ron, Hermione, Sirius eller Pettigrew på kartan då, eftersom de inte var tekniskt i Hogwarts territorium (som kartan täckte).