Title: The Poison Frog Mystery
Description: The Aldens investigate when exotic and endangered animals begin to disappear from the zoo where their new friend Lindsey works.
Subjects: Fiction, Brothers and sisters, Orphans, Zoos, Endangered species, Mystery and detective stories, Detective and mystery stories, Juvenile fiction, Children's fiction, Boxcar children (fictitious characters), fiction, Orphans, fiction, Brothers and sisters, fiction, Zoos, fiction, Endangered species, fiction, series:BoxcarChildren, collectionID:Boxcar3, Siblings, fiction