
The Couples Retreat
Mercedes Mercier
Penguin Random House AUS
2026, 336p
Read via my local library
Blurb {from the publisher/Goodreads.com}: 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.
Mercedes Mercier is one of those authors that’s been on my radar for a while but I haven’t had an opportunity to pick up one of her books. However this one was one of the books for my online book club and it was also going to be one of the two that we would be discussing live at our in person retreat. This is the fourth time about 100 of the book club have met up at a location for three days of bookish fun. I wrote more about that here and although I’ve been bad at finishing the book club books this year, I made a big effort to read both the books that were being discussed there, on top of the books I had to read for panel hosting duties. Luckily my library had this one available and I finished it three days before I needed to be at the retreat.
It centres around a young police officer named Emily Quinn who has recently been transferred to Kangaroo Island, an island off the coast of South Australia. It’s accessible by ferry or small plane and has a population of about 5000 and although it has several popular industries like wine and farming, it probably is most known for being a tourism destination, attracting a large number of visitors annually. It also experienced quite devastating bushfires a few seasons ago and is very much in a state of recovery mode. A part of the island is a National Park. I am not sure I’ve ever read a book set solely there before – if I have, I can’t remember but the setting was one of the reasons I was really looking forward to reading this one. When reading Australian books, I always love to find somewhere that feels new. I haven’t been to Kangaroo Island (I’ve only been to South Australia once in my life, actually for the very first in person book club retreat and haven’t explored extensively) so I was looking forward to getting to experience it as a setting.
Emily was raised by her parents to be independent, which means they basically weren’t going to support her after she finished school so she joined the police force as a way to get herself a well paying job that would enable her to support herself. After an incident in her personal life, she put in for a transfer and is arriving fresh on Kangaroo Island. On the ferry going over she observes several married couples who are heading to the island for a break. They are obviously very wealthy and Emily eavesdrops on their conversations unintentionally (she’s outside on the ferry to combat feeling unwell and can’t really avoid hearing them talking). As well as Emily’s perspective, we also get the perspective of one person who makes up the three couples heading to the island to stay in an exclusive holiday house. Ashley and her husband Nick are loosely connected to the other two couples – Nick went to university with both of the men and seems to be desperate to hang onto their favour. Ashley is less enamoured with them, having grown up in a very different lifestyle. She finds the men overbearing, entitled and gross and their wives fake and vacuous. But one of them has invested in Ashley and Nick’s athletic wear brand and they’re sort of stuck with him. Especially as Nick wants to ask him to invest more. Ashley is forced to go along with this vacation for the betterment of the brand, despite the fact that the friendship with these two couples is clearly driving a wedge between her and Nick.
You can guess what happens – after a few days settling in to her new home and being made to feel like a stranger for not being local, Emily and one of her colleagues are called to a murder at that exclusive holiday house. Several of the people staying there are dead, stabbed to death in a violent manner. There are some survivors who weren’t a part of the attack – are they the perpetrators, playing innocent to get away with it? Or did someone manage to find their way onto this property, attack and murder several of the people staying there and all without disturbing those who were unharmed? And while she’s dealing with her first murder investigation, Emily is also finding that the personal issue she left the mainland to escape has followed her to Kangaroo Island and it’s complicating her new job.
I have to say, well done to Mercedes Mercier for making several of these characters completely and utterly insufferable. The sort of characters where you actually hope that they’re the ones from the prologue that end up with the stab wounds – or is that just me? I think the story was told very well, alternating between Emily and our other perspective, which gave the reader an insight into both sides of the story, a glimpse into that wealthy and privileged lifestyle of excess….and then what happened when it all went wrong and some of them ended up dead. We also got a lot of complexity in Ashley’s narration, her feelings about being forced into this friendship where it’s quite clear she doesn’t like any of them really and they have no time for her either, because she’s not from their world. It’s causing problems in her marriage, she’s feeling quite distant from her husband and even though their brand has kind of really gone gangbusters, there’s always more expansion, always a need for more capital, which they don’t have. So they (well, Nick) continue to curry favour with these much wealthier couples, Nick seeks to be seen as ‘one of them’, part of that same crew. But he’s not and everyone knows it.
I also thought that the showing of Emily trying to fit in at her new role, taking up residence at a place that’s remote and insular, was well portrayed. There are a lot of places in Australia where you’re not seen as a ‘local’ unless you’re born and bred there, sometimes you can live there for decades and still be seen as the ‘blow-in’! Emily is trying to get to know her new colleagues, something that is complicated by several issues, she’s trying to settle into her new home, get the lay of the land. She’s thrown into a really big situation pretty much immediately, then she’s got the added personal drama that ends up cropping up again. Look there was a bit of a feeling for me that this wasn’t a super long book, so some of these things felt a bit glossed over, there was less focus but it was just there to complicate things a bit more or confuse Emily. A lot is made to how she was raised but…it kind of doesn’t really go anywhere, or really mean anything, I thought it might come up again later but it’s really only to showcase why she’s a police officer I guess and why she feels like she might have to deal with things on her own. I also feel like Emily is a character that Mercier could return to in the future, if she wanted to.
This was a tight, fast-paced story that moved along really well, gave some really creepy vibes and did a good job at exploiting its remote location and inaccessibility. I don’t read a lot of crime these days but I did enjoy this one! I should go back and read her earlier books because I’ve heard really good things about them.
7/10
Book #125 of 2026
















































