This long-running early chapter book mystery series follows four orphaned siblings who initially make their home in an abandoned boxcar before being taken in by their grandfather — and who go on to solve mysteries in every subsequent book. The series has continued for over eighty books under various authors and is a classic of early independent reading for its accessible format, resourceful protagonists, and gentle mystery plots.
Four orphaned siblings—Henry, Jessie, Violet, and Benny—run away to avoid being sent to live with a grandfather they've never met, and make a home in an abandoned boxcar in the woods, surviving through resourcefulness and teamwork until they are eventually found. The first in a long-running series that has captivated generations.