When an ancient evil threatens to devastate Rin, overcoming its people with a fatal sleeping sickness, young Rowan, with help from a tribe called the Travelers, must decipher a rhyming riddle in order to save the land and its inhabitants.

"With time running out as the twelve nights come to an end, Kay must puzzle out the riddles laid before her in this new land of Bithynia--and help restore the world to order--before her dad and sister are gone forever."--

Eleven-year-old Gabriel, with the help of the young raven Paladin, which whom he has a magical bond, travels to the foreboding land of Aviopolis, where he must face challenges and unanswerable riddles to rescue his long-missing father.

"Marie-Grace can't wait to begin her journey up the Mississippi River with her father. The steamboat they're traveling on is the biggest and fanciest boat Marie-Grace has ever seen. It's crowded with all sorts of interesting passengers, including Wilhelmina Newman, a girl her age. Wilhelmina is traveling alone, and she's carrying a secret in one of her trunks--clues to hidden Gold Rush treasure. Marie-Grace and Wilhelmina have to unravel the clues...

When Stevie Bell, an amateur detective, begins her first year at a famous private school in Vermont, she sets a plan to solve the cold case involving the kidnapping of the founder's wife and daughter shortly after the school opened.