Except for publicly traded securities, it’s very difficult to figure out what a zillionaire’s assets are worth.

Occasionally she posts a “snapshot” of herself posed alongside it and a neon-orange G-Wagon owned by her zillionaire half sister Kylie Jenner.

If Palm Beach was once a sleepy winter resort of the moneyed Eastern elite, it is now a kind of “zillionaire bedlam,” Mr. Stolman said.

The question is set within a tangle of tightening budgets, greedy politicians, ill-tempered bureaucrats and a creepy zillionaire media darling who is insinuating himself, for unknown reasons, into Slough House’s affairs.

He and his partner, Remy Morgan, probe the murder of an ailing real-estate zillionaire; someone tampered with the old guy’s bedside oxygen tank.