Monday's not coming

Monday Charles is missing, and only Claudia seems to notice. Claudia and Monday have always been inseparable-more sisters than friends. So when Monday doesn't turn up for the first day of school, Claudia's worried. When she doesn't show for the second day, or second week, Claudia knows that something is wrong. But Monday's mother refuses to give Claudia a straight answer, and Monday's sister April is even less help. As Claudia digs deeper into he...