Return to Foreverware

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?