Trixie's summer is going to be sooo boring with her two older brothers away at camp. But then a millionaire's daughter moves into the next-door mansion, an old miser hides a fortune in his decrepit house, and a runaway kid starts hiding out in Sleepyside!

In the 1940s, Julie Campbell was running her own literary agency when Western Publishing put out a call for talented authors to write mystery series for kids. Julie proposed the Trixie Belden series and wrote the first six titles herself, but books seven through thirty-nine were written by a variety of writers all under the pseudonym Kathryn Kenny.