With their father jailed for sinking a river boat, Noah Underwood and his younger sister, Abbey, must gather evidence that the owner of this floating casino is emptying his bilge tanks into the protected waters around their Florida Keys home.

Room 3B just learned that Ida had an ancestor who sailed on the Titanic and lived to tell about it! Miss Mackle decides that she will take the class on a real riverboat trip. But has something gone wrong.

Nancy Drew investigates a theft which occurs when she is on a riverboat.

Low on fuel, Maximilian's time machine lands him on a Mississippi riverboat where he meets a friendly southern bullfrog, collects an autograph from the author Samuel Clemens to add to his souvenirs, and gets enough fuel to continue his journey through history.

Nancy and her friends only have a few hours to track down the donations for a charity gala that have mysteriously gone missing in this fourteenth book of the Nancy Drew Diaries, a fresh approach to the classic mystery series. Bess's mom is on the board of Pet Crusaders, a local rescue organization, and hosts the charity's annual fundraising gala. Nancy, Bess, and George have attended the event ever since they were kids, and they're excited for this...

In the mid-1800s, with both her father and her uncle in jail on an assault charge, Maggie, her brother, and her ailing mother rush their barge along the Erie Canal to deliver their heavy cargo or lose everything.