Can Allie and Henry help their mom and get their apartment back at the same time? Twins Henry and Allie love the apartment they share with their mom, Sam, but their space has been feeling cramped ever since Sam started working from home. Her online meetings mean the siblings can barely use the living room!  At first, Allie and Henry figure out a quick fix—buying their mom some headphones. But when Allie stumbles upon a secret locked room in the basement, she and Henry ask the custodian, Mr. Jeff, for his help to turn it into an office. As they work away, the twins make new discoveries about themselves, Mr. Jeff and their amazing apartment building's history. They can't wait to show their mom her new workspace! The epub edition of this title is fully accessible.