User blog comment:ThatRetro/New Gooseblog: Who's Your Mummy?/@comment-37967386-20190505013953/@comment-4037231-20190505034022

Yeah, one downside to the whole story arc thing is that Stine can't do his trademark twists and when he tries, they are either undone like here, or weirdly ignored like in this next couple books.

Although even in the stand alone Hall of Horrors ones, the endings are rather mundane and it's in Most Wanted when he gets more out there with them again, for better or worse.