A Knives Out-style whodunnit with a twist of Taylor Jenkins Reid, You Must Remember This is an immersive Gothic mystery, with a long-ago love affair, icy death, and a rich family gone bad, from Kat Rosenfield, the acclaimed author of No One Will Miss Her.

On Christmas Eve, eighty-five-year-old Miriam Caravasios steps onto the ice that surrounds her seaside estate on Maine's Mount Desert Island. As a younger woman, she used to steal out on winter nights to meet her lover, walking across the frozen reach to their secret meeting place. She knows the way—but not the year. Miriam, her mind clouded by dementia, doesn’t hear the snap of thin ice until it’s too late.

Was it an accident? Suicide? Or worse: did someone lure the old woman onto the frozen reach, to her death?

There are plenty of suspects; Miriam’s fractured and complicated family has gathered in their Bar Harbor mansion to celebrate what everyone believed would likely be the matriarch’s last Christmas. The guests include Delphine, Miriam’s granddaughter, a frightened and insecure young woman who adored her grandmother, and Miriam’s live-in aide, Adam, whom Delphine has been secretly dating. There is Miriam's former housekeeper, Shelly Dyer, who left the family's employment years ago under mysterious circumstances. There are Miriam’s children: Theodora, who gave up everything to assume the role of caretaker; Diana, who seems just a little too eager to inherit her share of the estate; and Richard, whose longtime grudge against his mother has curdled into gleeful contempt at her deterioration.

But it’s Delphine who comes in for the greatest scrutiny when they learn the shocking news that Miriam’s will cut off her children, leaving her granddaughter almost everything.

As tensions rise, Delphine is emboldened to start asking questions: not just about her grandmother's death, but about her life, and the love story that defined it as the rest of her memories faded. The trail will take her into the past, into dark places — and eventually, onto thin ice.

"Blade-sharp, whip-smart, and genuinely original - a thriller to refresh your faith in the genre, your belief that a story can still outpace and outsmart you."- A. J. Finn, #1 New York Times bestselling author of The Woman in The Window "Clever and surprising...The superb character-driven plot delivers an astonishing, believable jolt."-Publishers Weekly (starred review) "Deserves two big thumbs up. Readers will be gripped by this astonishing story in which one gasp-inducing twist follows on the heels of another. A unique page-turner that just begs to be turned into a movie." -Booklist (starred review) "Sly, sinister...a white-knuckled read. There are gasp-worthy surprises, of course, and the exquisite and lurid twists will reveal themselves in time."--Vanity Fair A smart, witty, crackling novel of psychological suspense in which a girl from a hardscrabble small town meets a gorgeous Instagram influencer from the big city, with a murderous twist that will shock even the most savvy reader. On a beautiful October morning in rural Maine, a homicide investigator from the state police pulls into the hard-luck town of Copper Falls. The local junkyard is burning, and the town pariah Lizzie Oullette is dead-with her husband, Dwayne, nowhere to be found. As scandal ripples through the community, Detective Ian Bird's inquiries unexpectedly lead him away from small-town Maine to a swank city townhouse several hours south. Adrienne Richards, blonde and fabulous social media influencer and wife of a disgraced billionaire, had been renting Lizzie's tiny lake house as a country getaway...even though Copper Falls is anything but a resort town. As Adrienne's connection to the case becomes clear, so too does her connection to Lizzie, who narrates their story from beyond the grave. Each woman is desperately lonely in her own way, and they navigate a relationship that cuts across class boundaries: transactional, complicated, and, finally, deadly. A Gone Girl for the gig economy, this is a story of privilege, identity, and cunning, as two devious women from opposite worlds discover the dangers of coveting someone else's life. "Both amusingly satirical and darkly bloody."-The Washington Post

A Knives Out-style whodunnit with a twist of Taylor Jenkins Reid, You Must Remember This is an immersive Gothic mystery, with a long-ago love affair, icy death, and a rich family gone bad, from Kat Rosenfield, the acclaimed author of No One Will Miss Her. On Christmas Eve, eighty-five-year-old Miriam Caravasios steps onto the ice that surrounds her seaside estate on Maine's Mount Desert Island. As a younger woman, she used to steal out on winter nights to meet her lover, walking across the frozen reach to their secret meeting place. She knows the way-but not the year. Miriam, her mind clouded by dementia, doesn't hear the snap of thin ice until it's too late. Was it an accident? Suicide? Or worse: did someone lure the old woman onto the frozen reach, to her death? There are plenty of suspects; Miriam's fractured and complicated family has gathered in their Bar Harbor mansion to celebrate what everyone believed would likely be the matriarch's last Christmas. The guests include Delphine, Miriam's granddaughter, a frightened and insecure young woman who adored her grandmother, and Miriam's live-in aide, Adam, whom Delphine has been secretly dating. There is Miriam's former housekeeper, Shelly Dyer, who left the family's employment years ago under mysterious circumstances. There are Miriam's children: Theodora, who gave up everything to assume the role of caretaker; Diana, who seems just a little too eager to inherit her share of the estate; and Richard, whose longtime grudge against his mother has curdled into gleeful contempt at her deterioration. But it's Delphine who comes in for the greatest scrutiny when they learn the shocking news that Miriam's will cut off her children, leaving her granddaughter almost everything. As tensions rise, Delphine is emboldened to start asking questions: not just about her grandmother's death, but about her life, and the love story that defined it as the rest of her memories faded. The trail will take her into the past, into dark places - and eventually, onto thin ice.