“She would never have fit as neatly into the trunk of his own car. He presses two fingers against her beautiful neck. Just in case.

No pulse. The blow was fatal. He looks at her one last time and closes the trunk.

Her blood is all over his hands. Oscar stares at the curious patterns forming on his pale skin. No latex gloves this time. He tries to think. In the cold he hardly moves, watching the tiny pearls of red slide down the coarse hairs to his wedding band. The burning in his stomach spreads upwards to his chest. His control is slipping, his panicked breath forming small clouds in the dark. Oscar is in turmoil. From man to shivering animal in the space of three minutes.

Across the road, water rages over the falls …”

Limerick, Ireland. The O’Brien family’s driveway. American Oscar Harvey opens the trunk of his hosts’ car and finds the body of a woman, beaten and bloody. But let’s start at the beginning.

Kate and Mannix O’Brien live by Curragower Falls in Limerick, in a lovely house they can barely afford. Their son Fergus is bullied at school, and their daughter Izzy blames herself, wishing she could protect him. Kate decides that her family needs a vacation, and is convinced her luck’s about to change when she spots an elegant Manhattan apartment on a home-exchange website.

Hazel and Oscar Harvey and their two children live on Manhattan’s Upper West Side. Though they seem successful and happy, Hazel has mysterious bruises, and Oscar is hiding things about his dental practice. They, too, need a change of pace. Hazel has always wanted her children to see her native Limerick, and the house swap offers a perfect chance to soothe two troubled marriages. But this will be anything but a perfect vacation.

And the body in the trunk is just the beginning.

Published in the US & Canada by Viking Penguin, and in the UK by Canelo.

Remarkable Debut Novel
Toronto Star
"In a remarkable debut novel, MacDonald keeps the reader riveted."

Gripping Novel
InStyle Magazine
"Siobhán MacDonald's gripping novel commands your attention from the very beginning ... a property swap fraught with problems. Expect to finish this one seriously debating your next Airbnb reservation."

Dark & Intriguing
RT Book Reviews
“Dark and intriguing… MacDonald's strong writing accentuates pertinent details, and her vivid descriptions will have readers feeling the suspense throughout the story.” RT Book Reviews (★★★★)

A Superb Thriller
Chris Pavone
“Twisted River is a superb thriller – gripping, surprising, and terrifically rewarding.” Chris Pavone, New York Times bestselling author of The Expats
A Cracking Read
Emlyn Rees
“This is a cracking read, brimful of all-too-believable characterization, skillfully executed tension, and narrative sleights of hand.” Emlyn Rees, founder of the Dark & Stormy Crime Festival and co-author of Love Lives
A Big Thrill
Kirkus Reviews
“MacDonald toys with the reader, leading right then feinting left with plot twists that genuinely surprise. Infidelity, deception, revenge, and murder all come into play, but the big thrill here is the constant undermining of assumptions.” Kirkus Reviews
A Skillfully Wrought Thriller
“A skillfully wrought thriller that exposes the dangers of secrecy.” Booklist
The Listener is Riveted
Audiofile Magazine
Four narrators, a mix of American and Irish nationalities, capture the changing points of view across the chapters. The listener is riveted as the story changes from one point of view to another. We wonder if the next half-truth will unhinge the appearance of calm.” AudioFile (Winner of AudioFile Earphones Award)
A Dark & Twisted Tale
Alex Marwood
“MacDonald’s dark and twisted tale will change the way you look at Ireland forever” Alex Marwood, Edgar Award–winning author of The Wicked Girls
Strong Choice for Readers of ‘The Girl on the Train’
Library Journal
“MacDonald writes with confidence and throws in enough twists and turns to keep readers guessing right up to the finale … a strong choice for readers who enjoyed The Girl on the Train.Library Journal (★★★★)
Evocative Page-Turning Mystery
Kimberly McCreight
“Evocative and richly detailed, Twisted River is a page-turning mystery about the tragic consequences that result when the tightly held secrets of two families collide.” Kimberly McCreight, New York Times bestselling author of Reconstructing Amelia and Where They Found Her
Terrific Debut Novel
Chicago Tribune
"Her terrific debut novel, Twisted River, could hardly be more steeped in classic American pulp. MacDonald develops her twin stories with masterly control of mood and scene.” The Chicago Tribune