Concealed in Death: An Eve Dallas thriller (Book 38) by J. D. Robb
There is nothing unusual about billionaire Roarke supervising work on his new property - but when he takes a ceremonial swing at the first wall to be knocked down, he uncovers the body of a girl. And then another - in fact, twelve dead girls concealed behind a false wall.
Luckily for Roarke, he is married to the best police lieutenant in town. Eve Dallas is determined to find the killer - especially when she discovers that the building used to be a sanctuary for deliquent teenagers and the parallel with her past as a young runaway hits hard.
As the girls' identities are slowly unravelled by the department's crack forensic team, Eve and her staunch sidekick Peabody get closer to the shocking truth...