Sherlock's demon indeed encountered some problems.
Not long ago, his worm... or what should be called Tentacles, assimilated a carrion dog in a dream. Although this type of demon wasn't particularly powerful—with only basic fangs and claws, and being fast enough in movement—at least it could be summoned to lend a hand in some tasks;
The key point was that it wasn't a big deal if it died.
So at the beginning, when Sherlock had just reached the main street, he tried to tear open a void crack to summon that dog.
However, as soon as he focused his thoughts...
A spatial rift did appear.
Only, it didn't appear in front of him.
Instead, it showed up at... um... Baker Street;
It sounded all wrong. The void crack had actually appeared on the second floor of building 221B on Baker Street, right inside his newly rented apartment!
At that time, Sherlock was absolutely dumbfounded, for Baker Street was several kilometers away from his location!
