Trixie Belden and the other members of the Bob-White club try to learn the reason for the sudden appearance of Diana Lynch's long-lost uncle.

Not long after her family becomes wealthy, Diana Lynch's long-lost uncle appears and starts ruining her social life, causing Trixie Belden to investigate whether Uncle Monty is an imposter out to steal the Lynch fortune.

The family of Trixie's old friend Diana Lynch has suddenly become wealthy, but Di's having trouble adjusting. When a long-lost uncle shows up, Trixie is convinced Di's annoying relative is an impostor.

Get ready for fun, adventure, and intrigue with the first book in the iconic mystery series starring the beloved teenage girl detective, Trixie Belden! Trixie can't believe she is stuck in Sleepyside all summer while her two older brothers are away at camp. She is going to be sooo bored. But then a millionaire’s daughter moves in next-door, a runaway kid hides out nearby, and rumors heat up that the old mansion on the hill is filled with a fortune! Maybe the summer won't be so boring after all! Trixie Belden first appeared over fifty years ago in THE SECRET OF THE MANSION, which was followed by other suspense filled adventures as generation after generation of readers grew up with mystery-loving Trixie and her friends. This classic, wholesome series is perfect for the next generation of readers and new fans!

There's a new face in Sleepyside, and Trixie Belden is sure this stranger is up to no good. Too bad no one else believes her. But if anyone get can to the truth of this visitor's true motives, it's Trixie! Discover Trixie Belden, the teenage detective who has been charming readers for generations. Trixie Belden hasn't talked to Diana Lynch in a long time. Not since her family got incredibly wealthy...and snobby. But when Trixie and her best friend Honey spot Di looking a little down, Trixie knows it is time to put old grievances in the past. Except, the past is exactly the problem for Di. Her long-lost Uncle Monty has recently showed up, and he is ruining her social life. Trixie smells a rat. But can she prove that Monty is an imposter--or will Di be the one sent packing before it all over? Peek into the adventurous world of Trixie Belden and unravel book three in the mystery series that has delighted decades of readers.