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Review with Spoilers for A Killing Cold

01.22.2025 by Jen Ryland // 8 Comments

My Review with Spoilers for A Killing Cold discusses this new suspense book by Kate Alice Marshall, a former YA author turned adult suspense writer. Will you like it? Let’s discuss.

Cover of a Killing Cold which shows branches in the snow

Jen’s Quick Take on A Killing Cold

Graphic for Review with Spoilers for A Killing Cold by Kate Alice Marshall. The book's cover shows a bare branch against an icy blue sky.
  • A Killing Cold is a classic locked room/closed circle mystery
  • As the title suggests, this book is also a Chilling Winter Mystery
  • Kept me guessing, but got a little convoluted at the end
  • Some readers loved the vibes, but others disliked the slower suspense pace and the limited characters and claustrophobic feel
  • Also by Kate Alice Marshall No One Can Know and What Lies in the Woods
  • Published on February 4, 2025 by Flatiron Books. Thanks so much to the publisher for the advance copy for review.

Review With Spoilers for A Killing Cold

Original photo of A Killing Cold on a shelf next to other suspense books

For me, A Killing Cold combined some of my favorite tropes: the modern Gothic theme of the new bride coming into a rich and sinister family, a lot of dark family secrets, and a claustrophobic feel.

Theo is newly engaged and excited to meet her fiancé Connor’s family. So the two of them head to Idlewood, the Dalton family compound. It’s winter, and there’s not much to do but get to know one another.

A Killing Cold has many similar themes and tropes to other Kate Alice Marshall books:

  • a character with amnesia/memory loss
  • mysterious death in the past
  • siblings with secrets

How much you’ll enjoy this book depends on whether you love suspense fiction, with its gaslighting elements, measured pace, and overall uneasy vibe.

Some readers loved it, others felt the book went nowhere. Take my quiz and find out if suspense (or another subgenre) is for you!

This review will contain SPOILERS below.

But first, let’s run down the characters as I (and other readers) got confused at times:

Character List for a Killing Cold

Lone cabin in the snow
  • Magnus and Louise Dalton: Connor’s grandparents
  • They have two sons: Liam (deceased) and Nick, a doctor
  • Liam was married to Rose until his death
  • They have three children: Alexis (32), Connor (27), and Trevor (23)
  • Alexis is married to Paloma and they have a three year-old son (Sebastian)
  • Trevor is the youngest and hooking up with Oleana
  • Nick is divorced and has two daughters (Madison and Page)

Idlewild Staff

  • Daniel Vance is the caretaker and has a dog, Duchess
  • Irina is the housekeeper 
  • Oleana is Irena’s daughter and helps around the estate

Theodora “Theo” Scott’s family:

Joseph and Beth Scott are Theo’s adoptive parents 

Mallory Cahill is Theo’s biological mother 

Cabins: White Pine, Red Fox, Wildflower, Dragonfly


Spoilers for A Killing Cold and the Ending Explained

SPOILERS BELOW! To protect readers who HATE being spoiled you will need to click on the blue “Show Me” box below and log in with a Grow account, Facebook, or Google. By doing so, you will be added to my email list and receive weekly updates about new books! For more information on why I protect my spoilers, please read this post! If you are having any issues check this tutorial OR leave a comment below as I want to help!


Photo of a person reading by a fire with a steaming mug next to them.

There are a few mysteries in The Killing Cold:

  • Who is “Theo” and why does being at Idlewild trigger childhood memories for her?
  • What happened to Connor’s father Liam, and was it really an accident?
  • What happened to Theo’s biological mother?
  • Who is sending Theo texts warning her not to marry Connor?

We’ll get to those, but let’s do a quick plot summary:

  • Theo and Connor drive to Idlewood and on the drive there, are startled by a bloody deer running past. Connor says that it is bowhunting season. Okay, then.
  • Theo met Connor through mutual friends in LA. But she’s been getting texts telling her to stay away from him.
  • Theo wonders about a mysterious fifth cabin that the family doesn’t use. She also has a nightmare involving a dragonfly and an antlered man
  • Theo and Connor discuss Liam’s death in an accident when Connor was seven. Connor says his father fell off a roof.
  • Theo takes a walk at night to the unused, unnamed cabin and finds Vance, who asks her if she’s been at Idlewood before.
  • The next day, Magnus asks Theo to help him butcher a deer he has killed. They discuss the fact that Theo was adopted.

Theo’s memory starts to return

  • Theo goes back to the empty cabin and is certain she has been there before. She finds out the cabin was named Dragonfly, just like her dream. She also finds a photo of a man who looks like Connor (and must be Liam) with a young girl that looks like her. Of course I’m now wondering if Theo and Connor are half-siblings!
  • Theo finds Sebastian lost in the snow and gets him warmed up with Nick’s help. She remembers a woman with a red scarf. When she returns Sebastian to his cabin, she finds photos of woman with bruises.
  • Theo is convinced that Liam was the antlered man in her dream. When Connor is asleep, she goes back to Dragonfly. She has a memory of her biological mother telling her they have to leave.
  • She remembers Liam giving her mom a blue scarf and giving her a teddy bear. Oleana and Trevor turn up at the cabin to hook up and Theo has to hide.
  • When Oleana leaves, Trevor confronts Theo. He tells her that Liam was hiding a mistress in Dragonfly cabin. And a child (but she wasn’t Liam’s. Whew.)
  • Trevor also tells Theo that her meeting with Connor wasn’t accidental. Connor saw a photo of Theo that her friend Harper took and asked Harper to introduce them.

Was Connor the one who lured Theo to Idlewood?

  • Alarmed, Theo burns her hand as a way to get away from Idlewood. But Liam is a doctor and asks to see the burn. He also sees the old photo that Theo took from the cabin.
  • Nick confirms that the girl in the photo (named Teddy) was the daughter of a “friend” of Liam’s named Mallory.
  • He says that Alexis found out about Mallory and told Connor, and that after Liam’s accident, Mallory and Teddy left the compound.
  • Theo confronts Connor about scheming to meet her. He says that he saw the photo of her in Harper’s exhibition and thought he recognized her.
  • Theo manages to get cell service and calls Harper, who confirms Connor’s story.
  • Theo’s adoptive father contacts her. After that, she remembers getting pregnant as a teenager by a pastor’s son named Peter.
An antique gold and glass ornament hanging on a pine tree

Someone reveals most of the Dalton family secrets:

  • Someone puts weird Christmas ornaments on the tree: a photo of a crumpled car, a picture of Magnus, and a snowflake made out of a repurposed legal paper that suggests Rose was filing for divorce. Louise blames Theo. Theo thinks that Trevor is responsible.
  • Theo notices a photo on the tree of Alexis sitting on a woman’s lap and removes it while the family is distracted.
  • Alexis invites Theo to her cabin for a drink and explains the crumpled car: Connor got a DUI with a young woman in the passenger seat. Mangus paid off the girl.
  • In addition, Alexis says that Paloma knows about the photo of the woman on her lap, as someone emailed it to her.
  • Theo and Alexis discuss Liam’s affair. Alexis knew about it and had to keep quiet.
  • Alexis also says that her father’s death was not an accident.
  • Connor shows up and Theo mentions the photo of the woman with bruises. She asks him if those were of Kayla and he says yes.
  • Then Connor shows Theo her ornament: a photo of her at sixteen covered in blood and bruises.
  • They fight over the lies each told the other.

Theo opens up to Connor

  • Theo tells Connor about her adoptive parents (and Peter’s father) finding out about her pregnancy. She was beaten by Beth, her adoptive mom, until she miscarried. Then Theo went after Joseph, her adoptive father, with a knife.
  • The police agreed to forget Beth’s beating and Theo’s attacking Joseph. Theo went to live with Joseph’s sister until she was of legal age.

Theo starts to remember the last time she saw her mom

  • Theo struggles to remember what happened the night she and her mother left Dragonfly. She recalls the man with antlers looming over her.
  • Daniel Vance shows up and tells Theo that a woman called Mallory Cahill was living at Dragonfly. That Liam told him not to ask any questions or tell anyone. That Mallory and her daughter Rowen left the night Liam died.
  • Vance pulls out a box of Rowen’s things: a teddy bear, a blue scarf, and a photo of Mallory and Rowan. Theo realizes the bruised woman in the photos is her mother Mallory, not Kayla.
  • Theo remembers her mom telling her to run, and that her mother’s neck was coated in blood.

The stakes get higher

  • Louise offers Theo a check for 75,000 to leave.
  • Theo gets invited on a crossbow hunting trip trip with Magnus, Connor, and Nick.
  • Magnus tells Theo that Liam was too soft and needed to be someone’s hero.
  • Connor shoots an arrow that grazes Theo’s arm.
  • As Nick gives her stitches, Theo asks him about Mallory, and he seems to realize that she is Rowan Cahill.
  • Connor agrees that they can leave in the morning
  • During dinner that night, Theo searches the others’ cabins. She finds a burner phone in Magnus’s office and the photos of Mallory in Alexis’s suitcase.
  • Paloma shows up and tells Theo that Alexis keeping the secret of her father’s death not being an accident has taken a toll on her.
  • Theo calls the number on her warning texts and is not surprised to find that Magnus was sending them.

Connor opens up about Mallory

  • Connor tells Theo that Alexis found the photos of Mallory among his father’s things.
  • Then he tells her he met Mallory’s daughter and realizes that Theo is that daughter.
  • Theo says that her mother was murdered and that Liam’s death was not an accident.
  • Connor tells Theo he saw his dad’s autopsy report and that his only injury was a blow to the head.
  • Theo remembers Liam telling her they have to go, and then him falling down.

Theo’s escape gets complicated

  • A blizzard makes it impossible for them to leave
  • But Louise wants Theo OUT
  • Trevor says that Oleana left his bed last night and is now missing
  • They find Oleana dead in the snow, wearing a red coat that looks a lot like Theo’s
  • Rose brings Theo some tea.( I tell Theo not to drink it but she does…)
  • Rose admits she saw a divorce lawyer when Connor was a child AND that Nick knew
  • Theo tries to go to the UTV but guess who is there?

The Ending of A Killing Cold Explained

Nick. (Yes, Rose drugged Theo’s tea.) Magnus tells Nick to put Theo in Dragonfly.

  • Nick can’t believe that Connor and Theo met by chance. (Yes, I felt that way too. Connor said a five year-old Theo/Rowan told him she wanted to live in a warm place and they decide their meeting was … fate.
  • Theo tells Nick that he killed Oleana thinking she was Theo.
  • Nick thought Rowan was dead, but Magnus found her a new home.

Who killed Mallory?

  • Nick insists it was not him. Mallory was mortally wounded when he got there. He and Liam scuffled over the rifle and Liam was accidentally hit by the rifle butt.
  • Vance insists that Magnus tried to protect Rowan/Theo.
  • He also suggests a woman killed Mallory.
  • Vance leaves Theo, who manages to untie herself using a knife from her pocket.
  • Theo runs to Red Fox where she tells Alexis the story
  • Connor shows up and can’t believe any of it: Rose drugging Theo and his grandfather telling Vance to tie her up.

Alexis confesses: she killed Mallory

  • At fifteen, Alexis knew something was off with her father. Then she overheard her mother discussing a divorce. She drives to Dragonfly and confronts Mallory for sleeping with her father.
  • Mallory tries to explain but Alexis accidentally shoots her. Liam shows up and tells her to leave and that he’ll deal with it. She never sees him again.
  • Connor and Theo tell Alexis they have to leave before the family kills Theo.

Theo and Connor make a run for it

  • They head out on the UTV, but someone shoots at them and they crash.
  • Nick comes to check on her. She plays dead, but has the knife in her hand.
  • She stabs Nick in the throat.

The big reveal

  • Connor and Theo and head back to the lodge where Theo assembles then remaining family.
  • Theo announces that she is Rowan, daughter of Mallory Cahill
  • She adds that Nick, not Liam, was sleeping with Mallory. He was also physically abusing her, and Liam was helping her get away.
  • Alexis confesses to killing Mallory.
  • Louise suggests they just frame Theo for Oleana and Nick’s deaths
  • But Theo points out that Nick killed Liam. Magnus says yes, but it was an accident.
  • Magnus is also the one who killed Mallory (Alexis’s shot just injured her.) But he also has terminal cancer.
  • He offers to tell Theo where her mother is buried if she will protect Alexis by blaming Nick for everything.

Epilogue

  • Theo did not agree to Magnus’s plan, and was arrested for the murders of Nick and Oleana.
  • But Alexis confessed, so Theo was released.
  • Theo and Connor got married. Vance fled, so they adopted Duchess.

Thoughts? Opinions? Questions? Leave them in the comments and spoilers are fine!

Categories // Reviews Tags // adult fiction, BOTM, mystery, new books, spoiler discussion, suspense

About Jen Ryland

Over 12 years of book blogging and reviewing, I have read over 1500 books. A fair and honest reviewer who loves book discussions, I'm here to help you find a book you'll love to read AND give you a place to talk about it and ask questions.
Find me on Instagram and Pinterest as @jenryland!

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8 Comments
Keri
1 year ago

Meh. I made it to 85% but saw I still had an hour and a half left on the audio, so I came here to find out what happened. With these domestic suspense/thrillers I have to really like the main character(s) to sit through the whole story and not just go read the ending (or find spoilers).
I didn’t appreciate the hunting/butchering aspect.
But at least Theo legit had memory issues and wasn’t just lying to the reader for the purpose of a twist.

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Author
Jen Ryland
1 year ago
Reply to  Keri

Hi Keri!

Thanks for coming on here with your take. I struggle with audiobooks that don’t have a strong plot and to me, this was a classic Gothic gaslighting suspense book.

I reviewed YA in the 2010s and amnesia was EVERYWHERE. My take is that it’s good for creating doubt and uncertainty but can make the character an object of pity/emphathy rather than a character one can relate to/root for.

I hope you’ll come back to chat – by peeking at the spoilers you will receive my newsletter and I’d love to hear what you are reading and enjoying!

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Mayelynn
1 year ago

Does Theo have to go to trial for Nick’s death? I didn’t think so, but I already returned the book and can’t check it now.

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Author
Jen Ryland
1 year ago
Reply to  Mayelynn

I have an advance copy, but it doesn’t really say. Because Theo doesn’t take Magnus’s deal, she gets arrested. Then the family defends her, and she’s released. There’s mention of a trial for Magnus, but not one for her.

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Carla
7 months ago

I had this on my shelf for a long time but couldn’t get past the first chapter so I decided to just get spoiled. And yikes I’m glad I did. This sounds soooo convoluted and cheesy lol. Love when a protagonist knows she is in danger but decides to go on a hunting trip with the wealthy family trying to harm her!

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Author
Jen Ryland
7 months ago
Reply to  Carla

lol it’s like the girl in the horror movie who hears a sound outside and opens the door 🙂

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Cellar
2 months ago

I started listening to the audiobook for this and it just. Kept. Going. I was at 35% before I gave up but it felt like 50% 😂

It’s a shame, because it started off so good and I liked the atmosphere of the snow and cabins but it all just started to drag.

Very thankful to you for just covering it all here – nevermind the fact it obviously got very over the top as it went.

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Author
Jen Ryland
2 months ago
Reply to  Cellar

I enjoyed it overall, but I’m not sure how it would have worked on audio for me!

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