Book overview
Follow Henry, Jessie, Violet, and Benny Alden as they embark on new adventures and solve mysteries!
This set includes paperback editions of:
- Mountain Top Mystery
- Schoolhouse Mystery
- Caboose Mystery
- Houseboat Mystery
Four more mysteries with the Alden children
Faster options are available.
Rates and delivery estimates depend on your destination and item quantity. Estimates are informational only; the final shipping method and rate are selected at checkout.


Over 80 million books sold worldwide
The series is reported to have sold more than 80 million books worldwide.
Four more mysteries with the Alden children
This boxed set brings together paperback editions of four books from the original Boxcar Children series: Mountain Top Mystery, Schoolhouse Mystery, Caboose Mystery, and Houseboat Mystery. Henry, Jessie, Violet, and Benny Alden continue solving cases and making new friends across the collection. The four-volume format offers several separate adventures with the same central characters, while the titles point to a different place or setting for each mystery. It’s a straightforward way to collect the ninth through twelfth books in the series.
Based on publisher information and book metadata.
In-stock items normally dispatch within 1–2 business days. The ZIP-code estimator on this page is informational only; the final shipping method, price, and availability are confirmed at checkout for your full order.
For the initial delivery estimate we use these transit windows after dispatch: Standard 5–8 business days, Expedited 2–4 business days, and Priority 1–2 business days. Holiday delays are not included.
Eligible items can be returned within 30 days in accordance with our return policy.