From Peter Spiegelman, author of the award-winning Black Maps (“A stunner, a great debut roaring out of the gate”— Newsday ), a relentlessly exciting, masterfully written new thriller featuring New York City private investigator John March. This time March has been hired to find missing Wall Street analyst Gregory Danes. Once ubiquitous on television, Danes’s star went into steep decline along with the stock market: now he’s best known for his volatile temper and his obsession with restoring his tattered reputation. His ex-wife, a fashionable painter, wants to know why the alimony checks have stopped arriving. But what appears to be a straightforward missing persons case quickly becomes something much more deadly. March unearths a rat’s nest of family strife, business betrayals, and deceptions, and finds that Danes left a long line of enemies in his troubled wake—some of whom are also hunting for the missing man. March’s investigation now takes on a terrifying urgency as it leads him through the corrupt corridors of white-collar crime and the underworld of the Russian mob, and into the more intricate maze of the human heart. Crime fiction seems lately to have regained its fascination with investigators born into affluent circumstances, an archetype that was popular during the genre's "golden age" (between World Wars I and II) but was later eclipsed by more cynical and less solvent sleuths. Ethan Black, for instance, has won a following with his multimillionaire Manhattan police detective, Conrad Voort ( At Hell's Gate ). David Cray's Dead Is Forever introduced Philip Beckett, the black sheep progeny of a wealthy New York clan, who supplements his trust-fund allotments with whatever he can earn as private eye. And Peter Spiegelman's Black Maps (2004) gave us John March, a county sheriff's deputy-turned-gumshoe, whose history as the rebellious offspring of a New York banking dynasty positions him well to probe nefarious doings among Wall Street habitués. Death's Little Helpers , the second March outing, finds this conscientious and compassionate PI working for Nina Sachs, a prickly Brooklyn artist whose ex-hubby, onetime celebrity stock-market analyst Gregory Danes, has abruptly dropped out of sight, leaving her short of both alimony and child-support payments for their peevish teenage son, Billy. The egomaniacal Danes, who'd helped clients make their fortunes during the booming 1990s, only to then go "from hero to goat overnight" because of a bad call regarding an over-inflated software enterprise, has more than his fair share of enemies. Among them: investors who had trusted his advice; a mistress, Linda Sovitch--"the blond glossy host" of a must-see cable-TV business show--who loved him as long as he could make her look good on the tube; the head legal counsel at Danes's investment firm, who's nervous about a federal investigation and had argued with the analyst just before he vanished; and a smart but pathologically private hedge-fund manager. As March digs deeper into Danes's history and habits, he strikes up a mutually beneficial alliance with a Ukrainian mobster, who already has his hooks deep into Danes's ne'er-do-well brother, and draws unwanted attention from Jeremy Pflug, the unscrupulous owner of a private intelligence service, who thinks nothing about intimidating Marchs family or his girlfriend, "CEO-for-hire" Jane Lu, in order to earn a buck. Spiegelman knows this territory well (he's a financial-services vet himself), and twists together a hurtling plot that makes clear how short the distance can be between boardroom and gutter. He occasionally over-describes his scenes, sends his protagonist on far too many head-clearing runs around town, and could have done more to make March's fraying relationship with Lu interesting, or at least unusual. However, the author compensates nicely with a textured and emotion-laden portrayal of Billy Danes, a confused boy for whom "the closest thing he has to a grown-up in his life" is Ines Icasa, Nina Sachs's Spanish lover and business associate. Black Maps won a Shamus Award. Death's Little Helpers should win Spiegelman a still wider following. --J. Kingston Pierce Well-heeled, demon-haunted Manhattan PI John March returns in this uneven but ultimately satisfying sequel to Black Maps (2003). The first half of the novel threatens to sink under the weight of its own prose, what with whale-bloated descriptive passages cataloging every walnut-paneled location, investigative Web search, and head-clearing jog under purple-tinged clouds. (Perhaps Spiegelman's editor misplaced his red pen?) But March, an ex-cop still struggling to get over his wife's death and engaging in an uneasy dance with siblings who stayed in the family investment-banking business, remains a canny, winning protagonist. And the missing-persons case driving this tale--a fallen-star stock analyst with a balance sheet full of enemies storms out of his office one day and into thi