A local radio station is holding a Great Detective Race, and the Boxcar Children have entered the contest, wherein they solve riddles and search all over town for clues leading to the grand prize.

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

"One day in the park, the Aldens' dog, Watch, comes across a mysterious box with a note inside. 'Congratulations!' the note says. 'You've found it!' The box is part of a game called Geocaching. Soon, Henry, Jessie, Violet, and Benny are searching all over town for hidden boxes and making friends with other kids in the geocaching club. But is one of the club members a thief?"--P. [4] of cover.

"The Aldens are on a special vacation up north to see the Calgary Stampede -- a cowboy celebration of Canada's frontier spirit! There's a parade through the streets of Calgary, a spectacular stage show, and plenty of fun things to do. But behind the scenes at the festival, an important piece of jewelry goes missing. Can the Boxcar Children find the thief before the big show is ruined?"--Jacket flap.