Festergrimm

"This November is "NOPE-vember," Herbie Lemon tells Violet Parma, meaning no risky adventures, but spoiler alert: Perilous mysteries are Eerie-on-Sea's stock in trade. Sebastian Eels, the sleuths' slimy, would-be nemesis, returns to Eerie to refurbish and reopen Festergrimm's Eerie Waxworks. While Herbie and Vi doubt Eels' good intentions, their adult allies are less wary. When the bookstore mermonkey dispenses Dickens' A Christmas Carol, Jenny assumes it means Eels deserves a second chance. Dr. Thalassi hopes the gallery refurbishment will result in new exhibits for his Eerie Museum. Dismayed by Eels' plan, Mrs. Fossil reveals a secret: She's the caretaker of the gallery that was built by her ancestor Felix Fossil when he was hired to collect and repair the remains of Ludo Festergrimm's creations. Ludo's clockwork wonders included a giant robot intended to find Pandora, his missing daughter, but the robot's deadly rampage resulted in the destruction of both itself and its maker. The gallery is now a ruin. The train that once meandered through the spooky gallery's decaying waxworks sits motionless on tracks that descend in darkness to lower floors and exhibits. As creepy mysteries proliferate, Herbie senses Pandora's story is connected to his--but doesn't know how or why."--