Mountain Top Mystery — Gertrude Chandler Warner

One warm night four children stood in front of a bakery. No one knew them. No one knew where they had come from.

Henry, Jessie, Violet, and Benny used to live alone in a boxcar. Now they have a home with their grandfather and are spending the summer mountain climbing in New England.

A dangerous rockslide...a mountain cave...a secret treasure....There are many adventures in store for the Boxcar Children in the Mountain Top Mystery.