Forgotten in Death: An Eve Dallas Novel (In Death, 53) by J. D. Robb

The body was left in a dumpster like so much trash, the victim a woman of no fixed address, known for offering paper flowers in return for spare change―and for keeping the cops informed of any infractions she witnessed on the street. But the notebook where she scribbled her intel on litterers and other such offenders is nowhere to be found.
Then Eve is summoned away to a nearby building site to view more remains―in this case decades old, adorned with gold jewelry and fine clothing―unearthed by recent construction work. She isn’t happy when she realizes that the scene of the crime belongs to her husband, Roarke―not that it should surprise her, since the Irish billionaire owns a good chunk of New York. Now Eve must enter a complex world of real estate development, family history, shady deals, and shocking secrets to find justice for two women whose lives were thrown away…