Murder Times Two — Haughton Murphy

The murder of an eccentric millionaire presents a deadly puzzle for Reuben Frost
 
When Tobias Vandermeer, heir to one of New York's great real estate fortunes, required a quiet divorce, there was no lawyer more equipped than Reuben Frost. A cheerful drunk with a knack for jazz piano, Vandermeer and Frost remained friends -- right up until the day the former drops dead in the midst of a reading club dinner. The poison found in his bloodstream makes Vandermeer's death a murder; his fabulous wealth makes it a scandal.
 
Frost senses a clue in the deceased's latest needlepoint effort: a scene from the devastating satire Vanity Fair, the book club's latest subject. But eliminating suspects and finding his old friend's killer will require an angry call to the mayor, a trip to Rio, and at least one more death.
 
Murder Times Two is the 5th book in the Reuben Frost Mysteries, but you may enjoy reading the series in any order.