The Secret of the Mansion (Trixie Belden)

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! From the Hardcover edition.
ASIN: 0375924124
VSKU: RDV.0375924124.A
Condition: Acceptable
Author/Artist:Campbell, Julie
Binding: Library