Publishers Weekly
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Fans of Bradley's crime-solving chemistry prodigy Flavia de Luce will find much to enjoy in her latest post-WWII adventure, which, like previous series titles, is enlivened by actor Entwistle's flawless interpretation of the plummy-voiced, aristocratic, slightly brattish British schoolgirl. Twelve-year-old Flavia and her two older sisters, whiny Daphne and moping Ophelia, are depressed after their father's fatal bout with pneumonia. The family retainer, Dogger, whom Entwistle endows with a gruff, avuncular delivery, arranges for a seaside holiday for them. But as they travel down the river, Flavia discovers a corpse, partly submerged in the water. Together she and Dogger, acting as her Watson, are drawn into a tricky murder investigation. They meet an assortment of colorful villagers, including a patronizing, too-shrewd constable; a country-accented innkeeper and his wife; a stern, humorless chemist; and a very proper undertaker. What elevates this mystery is less the disclosure of whodunit than the alluring appeal of Entwistle's on-target rendition of Bradley's precocious yet charming young detective. A Delacorte hardcover. (Feb.) © Copyright PWxyz, LLC. All rights reserved.

Kirkus
Copyright © Kirkus Reviews, used with permission.

Now that both King George VI and her own beloved father have died (Thrice the Brinded Cat Hath Mew'd, 2016, etc.), preteen sleuth/savant/troublemaker Flavia de Luce fears that she'll have to submit to the iron rule of her Aunt Felicitybut not before another "happy holiday" with murder intervenes.Whisked off by family retainer Arthur Dogger on a river trip to Volesthorpe along with her sisters, Flavia trails her hand in the water just long enough to snag the corpse of alcoholic young actor Orlando Whitbread, the protg of one-legged actress-turned-director Poppy Mandrill, of the Puddle Lane Little Theatre. Before his recent death, Orlando's greatest claim to fame had been through his father, Canon George Whitbread, who'd been executed for poisoning three of his parishioners at Holy Communion. Convinced, despite the evidence smug Constable J.R. Otter brandishes that Orlando drowned in the river, that he was poisoned, Flavia resolves to investigate the new mystery and reopen the old. Fans of the precocious sleuth who share her unapologetically enthusiastic sense that "an unexamined corpse was a tale untold" will rub their hands gleefully, confident that her resolution will unleash a dazzling barrage of innocent-seeming questions, recherch chemical and pharmacological tidbits, fibs and whoppers, and the most coyly bratty behavior outside the pages of Kay Thompson's chronicles of Eloise. This time it also brings Flavia up against undertaker's son Hob Nightingale, a ragamuffin even younger and odder than her who comes across as something of a kindred spirit, a solace she richly deserves.Despite a climactic attempt on her life, Bradley's unquenchable heroine brings "the most complicated case I had ever come across" to a highly satisfying conclusion, with the promise of still brighter days ahead. Copyright Kirkus Reviews, used with permission.

Library Journal
(c) Copyright Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.

Flavia de Luce, the 12-year-old genius who loves chemistry and murder investigations, is mourning her father's death by spending summer days floating down the river with her sisters and Dogger, the family factotum. As Flavia idly discusses a recent poisoning with Dogger, she drags her hand in the water and catches her fingers in the teeth of a skull. The victim is identified as the son of the notorious Canon Whitbread, who had been hanged for poisoning three women during a church service. As usual, Flavia throws herself into the investigation, using her scientific knowledge and curiosity to endanger herself. There's only one Flavia, the precocious amateur sleuth caught between childhood innocence and book knowledge. This ninth adventure (following Thrice the Brinded Cat Hath Mew'd) seems to bring an end to one story line as the three sisters and Dogger are prepared to move on with their lives. VERDICT Series fans will anticipate the details of this investigation, along with one last taste of Flavia's unorthodox family life. [See Prepub Alert, 7/3/17.]-LH © Copyright 2017. Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.

Book list
From Booklist, Copyright © American Library Association. Used with permission.

Who but Flavia de Luce could dangle her hand in the river on a boating outing and hook a human corpse in the mouth? Death seems to follow the 12-year-old chemist-sleuth everywhere, even on this excursion planned by longtime family servant Arthur Dogger as a diversion for a household still grieving the unexpected death of the de Luce patriarch. The body turns out to be that of actor Orlando Whitbred, son of the canon hanged for murdering three elderly ladies by serving them communion wine laced with cyanide. Surreptitiously, Flavia retrieves fluids from Orlando's lungs and a puzzling note from his pocket. Then, in league with Dogger, Flavia is out to determine how Orlando died, and while she's at that to look into the canon's crimes, too. Relationships with her two difficult older sisters improve, with literary Daphne interpreting pertinent poetry for Flavia, and Ophelia and her fiancé coming to the young sleuth's rescue in the nick of time. A promising partnership is ahead for the irrepressible Flavia, whose cozy escapades hold appeal for all ages.--Leber, Michele Copyright 2017 Booklist

Publishers Weekly
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Set in England in 1952, Agatha-winner Bradley's outstanding ninth Flavia de Luce novel (after 2016's Thrice the Brinded Cat Hath Mew'd) finds 12-year-old Flavia contemplating suicide in the wake of a family tragedy. To relieve the increased tension between Flavia and her two older sisters, Dogger, the de Luce family's long-serving and devoted servant, proposes an extended boat trip on the river. All is uneventful until the skiff nears the site where a notorious poisoner, Canon Whitbread, discarded the chalice he used in his crimes. Flavia's hand, trailing behind the boat, comes into contact with the corpse of the canon's son, Orlando. Unperturbed, Flavia uses her handkerchief to swab liquid from the dead man's lips, and she and Dogger jury-rig a forensic lab to examine the sample. Though disappointed when the evidence shows Orlando was drowned instead of poisoned, Flavia persists with her amateur detecting, even as she runs afoul of the local constable. As usual, Bradley makes his improbable series conceit work and relieves the plot's inherent darkness with clever humor. Agent: Denise Bukowski, Bukowski Agency. (Jan.) © Copyright PWxyz, LLC. All rights reserved.