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  • Published: 14 April 2026
  • ISBN: 9781761356698
  • Imprint: Penguin
  • Format: Trade Paperback
  • Pages: 336
  • RRP: $34.99

The Couples Retreat




Six friends. Three Nights. One deadly secret - a twisty, compulsive destination thriller where no one is as perfect as they seem.

There’s nothing more dangerous than someone who remembers who you used to be.

At a secluded beachfront mansion on Kangaroo Island, three wealthy couples gather for a weekend of partying and luxury indulgence. But beneath the glitter and excess, deep rivalries and explosive secrets fester between the old friends.

When they wake to a shocking murder scene, they are gripped first by fear, then by suspicion. With ferry services suspended due to a storm, the survivors and the killer remain trapped on the island together.

Thrust into the biggest case of her fledgling career, rookie police officer Emily Quinn quickly discovers that the locals are mistrustful of outsiders. When her dangerous ex-boyfriend tracks her down, Quinn’s past and present collide in spectacular fashion, threatening not only her new life, but the investigation of the most gruesome crime in the island’s history.

Set in one of Australia’s most beautiful locations, The Couples Retreat is a twisty, compulsive thriller that proves privilege cannot protect you from everything, and no one is as perfect as they seem.

'This book had me obsessed. Twisty, sharp, menacing. Crime with both class and grit.' Candice Fox

'A page-turned with characters you'll love or hate in equal measure - for fans of Ali Lowe or Dervla McTiernan.' Kerryn Mayne

'A juicy, fast-paced thriller populated by beautiful, destructive humans with lots to hide and more to lose. It understands the allure of watching the powerful falter and points the finger back at us. Why can't we look away?' SMH

  • Published: 14 April 2026
  • ISBN: 9781761356698
  • Imprint: Penguin
  • Format: Trade Paperback
  • Pages: 336
  • RRP: $34.99

About the author

Mercedes Mercier

Mercedes Mercier writes ‘just-one-more-page’ crime with twisting plots and relatable characters. As well as writing books, Mercedes has worked in the criminal justice system for over a decade, giving her unique insight into the world of crime and offenders. After a brush with death, Mercedes threw herself into life. She lived overseas, became a black belt in Karate, skydived, and volunteered with animals. Mercedes lives in Adelaide, in a tree-top home surrounded by kangaroos, koalas, kookaburras and the occasional echidna. Her home is busy, fun and slightly chaotic, with her very patient husband, identical twin daughters and beloved German shepherd dog who rules the roost.

Praise for The Couples Retreat

A juicy, fast-paced thriller populated by beautiful, destructive humans with lots to hide and more to lose. It understands the allure of watching the powerful falter and points the finger back at us. Why can't we look away?

Jessie Tu, SMH

This book had me obsessed. Twisty, sharp, menacing. Crime with both class and grit.

Candice Fox

A page-turned with characters you'll love or hate in equal measure - for fans of Ali Lowe of Dervla McTiernan.

Kerryn Mayne

Suspenseful, taut and utterly compelling. I devoured every page.

Rae Cairns

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