A review by scaifea
The Specter from the Magician's Museum by Brad Strickland, John Bellairs, Edward Gorey

4.0

Lewis and Rose Rita visit a museum of magic and accidentally let loose a spector in spider form (because of course they do). It targets Rose Rita and it's up to Lewis and his uncle and their witchy neighbor to figure out how to save her.
Another fun entry in the series, and Charlie loved it, so I call that a chicken dinner.