Title: The Mystery of the Spider's Clue
Description: When an elderly friend is injured, the Alden children offer to help him with his window-washing business in their small town of Greenfield and agree to help him solve a riddle that has arrived in a mysterious invitation.
Subjects: Fiction, Brothers and sisters, Orphans, Mystery and detective stories, Children's fiction, Brothers and sisters, fiction, Orphans, fiction, series:BoxcarChildren, collectionID:Boxcar3, Siblings, fiction