Too niche -I do possess the complete adventures of Sherlock but haven't red it. It needs to be studied before attempting this grid.

Too many connections of the same speciality. No good if someone's not a fan boi.

I tried to design it so that it was easy if you have read and are familiar with the Sherlock Holmes canon, hard if you've read it but aren't totally familiar, and... yeah, not super doable if you haven't read it at all. It was a midnight experiment and I totally get if it didn't go over well.