Jack loves sleeping at Jem's house. He has so many cool games! But Why is Jem acting so weird?
Jack hates spelling. He has a test coming up, but he doesn't want to practice for it. What will happen if he leaves it too late?
Jack is mad that his best friend got the solo he wanted. But when things go wrong on concert night, can Jack save the day?
Jack has made an awesome robot suit for a costume party. But what if the other kids at the party think it's lame?
Jack and Billie are off to carols by candlelight! They can't wait to near their favorite singer. But what will happen when Jack gets lost?
Jack's in the mood for mooching around, not playing with his crazy cousins! But will his bad mood spoil the whole day?
Jack's new babysitter isn't like other grown-ups. Pizza for dinner, juggling lessons and sleeping outside without a tent! It's almost too much for Jack to handle ...
Jack is going horse riding - it's going to be awesome! But then he has to ride the slowest pony. How can he pretend he's a cowboy now?
Jack's whole class is coming to his birthday party. It's going to be awesome! But what will he do when his best friend is too sick to come?
Billie and the Secret Mystery Club are investigating their most serious mystery yet. Something has been taken from the principal's office at school! Who could have been done such a terrible thing? And when one of Billie's friends becomes a suspect, will Billie even know who to trust anymore?