I absolutely love the lore surrounding Vlad and anything that has to do with Occult Sims, really. I think what happened to Bella Goth is one of the most engaging mysteries in The Sims series, especially if you take into consideration the fact that she has appeared in various installments and some of them seem connected, but not all things add up. I believe I once saw a description in a Sims 4 book in the Writer career that had to do with Bella again, but I don't fully remember it.
Also, the Mysteries page in the Sims Fandom is certainly incomplete, I believe I saw somewhere that there is a new mystery in the Royalty&Legacy Expansion Pack and I will post here if I find it again. I think it has to do with a grave in one of the households and a certain family member in one of the premade Sims households.
