Return to Foreverware (Eerie, Indiana)

This introductory novel finds Marshall Teller and Simon Holmes working at cleaning the basement and attic at the Stewart's house. The boys think their employers are strange--everything about their habits and clothes wreaks of 20 years in the past. Back then, Mrs. Stewart was a Foreverware representative--she sold the creepy containers that can keep anything fresh--forever. Any why does she look at Simon like he might be the next visitor to her Foreverware room--permanently?