Still grieving the death of her husband two years earlier, FBI agent Lina Connerly welcomes the chance to relocate to Paris with her teenage son Rory. Officially, she’s posted to the Embassy to liaise between American and French counterintelligence. Unofficially, she’s hunting Calvin Cook, a fugitive American intelligence officer who leaked classified documents, fled to Russia, and is now rumored to be somewhere in France.

Lina is still exploring expat life in Paris—Rory’s new school, the wonderful crêpes near their Haussmann apartment, the labyrinthine world of the embassy—when a celebrated American pastry chef gives her a lead on Cook, and, for the first time since her husband’s death, the possibility of romance. Meanwhile, her French colleagues pull her into a cold case they’ve never been able to crack: the mystery of the Train Fantôme. Twenty years ago, nine passengers were found dead in a single Métro car with no clear cause of death. And a recent discovery in the city tunnels suggests the threat may not have died with them.

Then people Lina personally recruited—old assets she swore she would protect—start turning up dead. Cook is burning their identities one by one. With the Train Fantôme unsolved, a summit of world leaders just days away and headquarters paralyzed by internal politics, Lina realizes she must act alone—and decide exactly how far she is willing to go to honor the promises she made.

Praise for The Wonder Test:

“A madcap suspense novel with a clever premise . . . high-spirited, riveting. It combines the relentless, competitive pressure of growing up in affluent Silicon Valley suburbs with a future already coming round the bend. By blending the speculative and the familiar, Richmond makes us believe.”—San Francisco Chronicle

“A witty blend of satire and thriller . . . The grounding presence of Lina and her son keeps the story on track as it speeds to a conclusion that’s both harrowing and hilarious.”—Air Mail

“Ms. Richmond maintains a creepy sense of dread throughout, even as she explores Rory’s coming-of-age and Lina’s coming-to-terms.”—Wall Street Journal

“A gripping blend of danger and sharp social commentary on high-stakes education, the 1%, and suburban tropes: imagine a coffee date with Lisa Lutz’s Spellmans and Tom Perrotta’s suburbanites in a sun-drenched Twin Peaks.”—Booklist (starred review)

“A two-in-one winner: a gripping thriller set in a Stepford-esque California suburb, and a story of surviving loss and building family bonds. With a realistic protagonist, well-described setting, and an uber-creepy villain, it will please readers who like their stories with action and heart in equal measure.”—Library Journal (starred review)

“Sharply written, subtly satirical . . . Vividly sketched characters, escalating stakes, and evocative prose distinguish Richmond’s latest, which explores themes of grief and greed.”—Publishers Weekly

“Captivated by the novel’s simultaneously tough and tender protagonist, FBI agent Lina Connerly. After this, I’ll read anything Michelle Richmond writes.”—Vendela Vida, author of We Run the Tides

“The Wonder Test features a terrific, clever, and timely concept, and Lina Connerly, a loving mother, is also exactly the kind of tough-as-nails heroine to chase down the truth. Gripping, frightening, swift as a bullet. The last hundred pages could give you whiplash.”—Dean Koontz, internationally bestselling author of The Night Window

“The Wonder Test is fast-paced and smart, thoughtful and full of heart. I never thought a book could combine the thrilling twists of a Sue Grafton novel and the literary complexity of the best Tana French, but Michelle Richmond has done it. The Wonder Test is a triumph and a joy.”—Amanda Eyre Ward, New York Times bestselling author of Lovers and Liars