"Norah and Darcy's detective agency, Partners in Crime, is taking on a new and chilling case. The girls' classmate, Maya, is hearing strange, crackling voices coming over the baby monitor while she's babysitting late at night. To help investigate, Norah and Darcy join her for a sleepover stakeout. In between eating snacks and watching TV, the girls are on high alert for anything suspicious. Soon, they stumble upon a shocking secret-but Norah and Darcy...

Claudia's sure it is the phantom phone caller who has been operating as a jewel thief in the area. So she and the baby-sitters decide to take action against him and get some very mixed results.

"Adults are always telling kids that spiders are more afraid of them than they are of the spider. But what about when that spider is the size of a dog? And your parents are out? And you just saw it scuttle past the open doorway to the living room? You know it's waiting to jump out and eat you. You have no choice...you have to find it before it finds you!"--