The Mystery Girl (Volume 28) (The Boxcar Children Mysteries)

Henry, Jessie, Violet, and Benny are working in a general store, to help out a friend of Aunt Jane’s. It seems to the children that the young girl who works in the store is behaving very strangely. She seems nervous and won’t answer any questions about her past. Then a strange man comes to the store asking about her. What secret is the mystery girl hiding?