Stacey and the Mystery at the Empty House

In this middle-grade mystery, Stacey from the Baby-Sitters Club is tasked with house-sitting for the Johanssens while they're away. Strange behavior from the family dog, warm appliances left on, and trash in the wastebaskets soon convince her that someone else is using the empty house possibly as a hideout. As she investigates, she must piece together the clues before the intruders realize she's onto them.