A winter vacation at Butter Ridge ski resort becomes an exercise in fear as Nancy tries to unravel the secrets of the main lodge, a French castle rebuilt in Wisconsin.

As the Night of the Hungry Ghosts approaches, Bridget and Tom investigate a mysterious ghost train that causes disappearances in their town and race against time to save Mr. Vanderpuff and stop the looming threat to Belle-on-Sea.

"I mean, how could that even happen? Who told the gang about the money? And those Bronx accents, that's another thing. Did the men really come all the way to little old Prescott . . . from New York City . . . to execute a perfect kidnapping? Then there's the mystery man who arrives late to the party. Who is he and what's his role? Is he the elusive mastermind, or is it someone else? (Just the idea of it gives Kathy a headache.) Is he the one responsible...

"Francie searches for the truth about her mother, and herself, which plunges her into danger during a North Woods winter"--Provided by publisher.

Max, Liz, and Chen's teachers continue to act strangely, and the Code Breakers face their toughest challenge yet when the art room at school is trashed.

Liz, Max, and Chen start to think that the school janitor knows more than he's letting on, so they begin to investigate.

"On their last, delicious day of horseback riding at the Flying W Dude Ranch, the mystery searchers spot soaring turkey vultures--nature's garbagemen--in the distance, slowly descending. 'It's dinnertime!' Kathy quips as the foursome races over to check out a deep ravine. Little do they know that they're about to step into a century-old legend--the Legend of Rattler Mine--that's far more perilous than it first appears. Does it really exist? If it...

"A small child wanders across a busy Arizona highway! In a hair-raising rescue, sixteen-year-old twins Tom and Suzanne Jackson save the little girl from almost certain death. Soon, the brother-and-sister team up with their best friends . . . on a perilous search for the child's mother--and their past"--Page 131.

"The Jackson twins are saved by a courageous stray dog that confronts one of central Arizona's well-known predators-a mountain lion! Their after-Christmas hike at Prescott's Watson Lake leads to a baffling case covered on the front pages of 'The Daily Pilot,' Prescott's hometown newspaper . . . that same morning. Did an individual expire from natural causes . . . or was it something far more sinister? The mystery searchers and Heidi Hoover team up...

While on a field trip to a local zoo, Max, Liz, and Chen must solve a mystery on the school bus.