Gertrude Chandler Warner

Four orphaned siblings take refuge in an abandoned boxcar that becomes their home, as they hide from their "villainous" grandfather.

Jessie and Henry's robotics team is competing in a big tournament. But when their robot is stolen, the Aldens have a high-tech mystery to decode!

On a vacation to Padre Island, the Aldens help the endangered sea turtle--and solve a mystery.

When the Alden children and their grandfather visit Everglades National Park in Florida to solve the mystery of a missing ranger, they discover that a panther provides a clue.

The Aldens are excited to learn about beekeeping. But when equipment goes missing, they have more than honey to harvest -- they have a mystery to solve!

While visiting the Florida Keys, the Aldens encounter suspicious characters, strange incidents at night, and a plot to steal valuable coral.

Can the Aldens figure out who's responsible for the bad press before the center gets shut down for good? Henry, Jessie, Violet, and Benny are excited to learn more about raptors when they volunteer at a rehab center for wild birds. But not long after they arrive, a series of strange events makes it seem like someone might be trying to sabotage the center. Who could the culprit be, and why would they want to cause trouble for injured birds?

The Boxcar Children are investigating strange events at a hotel that some people say is haunted, and it seems like every room holds a new surprise. In this interactive, choose-your-path mystery, readers will put their sleuthing skills to the test, making decisions that will either help the Aldens crack the case or lead them deeper into the haunted hotel.

Jessie wants her science fair project to make a difference. So when she gets the chance to test a local creek for pollution, she can't wait to get started. But when things start going wrong with her experiment, Jessie and her siblings don't just have an experiment to investigate, they have a mystery to solve!

The Aldens try out a Halloween escape room. The puzzle are fun to solve. But when eerie events start scaring people away, the children find a much bigger case to crack.