Siblings Seth and Julia practically live at Waldameer, the local amusement park, during the summer. While showing their friends around the park, they find an old locket near the carousel. How long has the locket been lost, and what’s the photograph inside it? Most importantly: whose locket is it? Their quest to find the locket’s owner unearths Waldameer history in the process. Follow Seth, Julia, Tyren, and Anh as they search for clues, outsmart bullies, and make unexpected friendships in their very first Waldameer mystery!

After a masked figure scares Seth and Julia in the Whacky Shack, strange things start happening. Some say the ride is haunted by an angry ghost. Who is causing all the trouble? Is it related to the award ceremony happening in a few days? From the ambitious journalist to the pushy salespeople, there is no shortage of suspects in this Waldameer mystery. Join Seth, Julia, Tyren, and Semira as they race to protect one of Waldameer's most beloved rides!

"Antiques like this locket tell stories of the people who owned them, loved them, or lost them." Seth and Julia Ambrose practically live at Waldameer, the local amusement park. While showing their friends Tyren and Anh around, they find an old locket near the carousel. Where did it come from? How long has it been lost? Most importantly: whose is it? Follow Seth, Julia, Tyren, and Anh as they search for clues, outsmart bullies, and make unexpected friendships. Their quest to find the locket's owner launches them into a Waldameer mystery more than a hundred years in the making David Gorman grew up in Erie, Pennsylvania and always had his head in a book. His family owns and operates Waldameer, meaning David's summers were spent working at the park. David has had several jobs in education in the United States and in Vietnam. He likes schools because children tend to make him laugh and vice versa. David currently lives in Richmond, where he is earning his Masters of Education in Counseling in order to work as a middle school counselor. Visit him at www.davidgormanbooks.com.

"Whoever is behind all the trouble is trying to sabotage the ceremony!" After a masked figure scares Seth and Julia Ambrose in the Whacky Shack, strange things continue to happen. Some say the ride is haunted by an angry ghost. Who is causing all the trouble? Is this related to the award ceremony happening in a few days? From the ambitious journalist to the pushy salespeople, there is no shortage of suspects. Join Seth, Julia, Tyren, and Semira as they search for clues, narrow the list of suspects, and race to protect one of Waldameer's most beloved rides in their most important mystery yet! David Gorman grew up in Erie, Pennsylvania and always had his head in a book. His family owns and operates Waldameer, meaning David's summers were spent working at the park. David has had several jobs in education in the United States and in Vietnam. David currently lives in Richmond, where he is earning his Master's of Education in Counseling in order to work as a school counselor. His first book is Waldameer Mystery Files: The Long-Lost Locket. Visit him at www.davidgormanbooks.com.

WHEN SETH AND JULIA are approached by a secretive man and asked to solve a decades-old scavenger hunt, they accept. But they’re not the only detectives the man has recruited for this Waldameer mystery. Can Seth and Julia find the treasure before the team of cheaters? Who is the mystery man, and why does he always wear a disguise? The latest Waldameer mystery sends Seth, Julia, Bek, and Semira on a puzzling race as they compete to solve the curious clues! --- David Gorman’s family owns and operates Waldameer & Water World in Erie, Pennsylvania. For updates and behind-the-scenes fun, visit www.waldameermysteryfiles.com.

Seth and Julia Ambrose are pros at solving mysteries at their favorite amusement park. But can Julia solve her biggest mystery yet without her big brother? After finding a ruby at Waldameer, Julia and her friends are soon searching the concession stands for stolen jewels worth millions. Time is ticking because the thieves who stole the jewels are coming to claim their lost loot. Can the kid detectives outwit the thieves? Does Julia have what it takes to lead the team by herself? Find out in this exciting all-girls mystery about believing in yourself!

DANGER! OPEN IF YOU DARE, says the ominous message written on a water park locker. As seasoned Waldameer detectives, Seth and Julia can’t pass up a mystery, and they accept a secret mission from an unknown gamemaster. While the mission has them solving riddles and decoding hidden messages, Seth and Julia investigate the gamemaster, including something called Operation Neptune. Does the gamemaster work for a top-secret agency? What’s Operation Neptune, and what does it have to do with Water World? In the detectives’ quest for answers, their friendships will be tested. Join Seth, Julia, Tyren, and Gabriela as they follow the gamemaster’s secret mission to its shocking conclusion!