HE’S billing it as fiction, but the plot of the next book from best-selling author Warren Adler will seem like a documentary to the well-heeled residents of Palm Beach. Due in July, “Mourning Glory” is all about a broke but beautiful woman looking for a wealthy husband in the Florida enclave.

Her spouse-hunting technique involves going to the funerals of rich old ladies and helping their bereaved widowers clean out the closets filled with couture clothes. (I know of at least three women who’ll say Adler’s based his book on them.) Hollywood interest is huge – Warren’s 23 novels are all movie-ready, as witness “War of the Roses” – and this story of a glamorous grifter can’t miss.

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