A missing dinosaur tooth makes for a massive investigation in this Hardy Brothers Secret Files Mystery.

Frank and Joe are excited for their field trip to the Bayport Museum of Natural History with their science club. Not only will they get to see some awesome dinosaur skeletons on display, but they also get to go on their very own fossil dig on the museum grounds.

At the dig, fellow classmate Tico uncovers an old dinosaur tooth--even though Tico's biggest competition in the club, Aisha, claims she found it first. And when Tico realizes his tooth is missing--a tooth that turns out to...

A medieval faire brings the past to life--and a mystery to the present--in this Hardy Brothers Secret Files adventure.

Frank and Joe Hardy are excited to visit the King Arthur Faire in Bayport. On Kid's Day, there are all kinds of special contests and events, like the Medieval Maze and Junior Jester Court Slam. The highlight of the day is the Junior Joust competition: whoever can stay on a mechanical horse and lance a golden ring with their (fake) sword will win seats to watch the real jousting competition later in the day.

To everyone's surprise (and delight) Joe and Frank's friend,...