Dirty Work (2003) Stuart Woods is #9 in the Stone Barrington series.

More fine dining, drinking, and meaningless sex.

Hired to prove infidelity in an heiress’ marriage, Stone Barrington goes undercover.

But the work turns dirty – and catastrophic – when the errant husband is found dead, and the other woman disappears without a trace.

Now Stone must clear his own good name and find a killer hiding among the glitterati of New York’s high society.

Not bad.