John D. MacDonald, who had a business degree, occasionally strayed from conventional mystery scenarios to write a business story. I don’t think Barrier Island was a publishing blockbuster, but MacDonald had the clout to get it published, and it’s effective.

Our hero is Wade Rowley, a real estate broker on the Mississippi Gulf Coast. He has a partner, Bern Gibbs. Bern is an old friend, but their different business styles (and willingness to skirt legalities) are beginning to strain their association. Wade is especially concerned about a recent deal Bern took them into with Tucker Loomis, a swashbuckling local property developer. Bern assisted Tucker with land purchases for an extravagant new development on a barrier island. But now the government is seizing the island for environmental protection, and Tucker is suing for lost profits. Wade has a sneaking suspicion that the whole thing was a scam from the start. Tuck Loomis must have known the island was fragile and unstable. He probably leveraged his assets to buy up the land cheap so he could profit big from the government settlement.

Wade goes to visit one of the “property owners” listed in the development records, and discovers that the man is both poor and a Loomis employee. So he goes to a friend in the government and gives him the information, just in case the whole thing blows up on them. When Bern finds out about that, they get in a fight and agree to dissolve their partnership.

But that’s all before a murder happens.

Barrier Island was John D. MacDonald’s last novel, published in 1986. It reflects the author’s long-standing concern for environmental preservation, as well as (I suspect) the influence of the “Dynasty”-style prime time soap operas that were popular at the time. There was the same fascination here with the lifestyles and peccadillos of the rich, but at its heart the story is a morality tale. All the main characters are fully fleshed out, and even when we don’t like them. we’re permitted to observe their motivations, which are not always base.

Barrier Island wasn’t John D. MacDonald at the top of his game, but he was incapable of writing a bad story. Cautions for adult situations.