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Readers Guide to the Wasp Trap

09.08.2025 by Jen Ryland // 6 Comments

My Readers Guide to the The Wasp Trap discusses this dinner party gone VERY wrong book. Is this suspenseful, dual timeline book with a complicated plot for you? Let’s find out!

Cover of the Wasp Trap with is an overhead view of a rectangular dining table

Readers Guide to The Wasp Trap

Table of Contents:

Jen’s Quick Take on The Wasp Trap

Character List for The Wasp Trap

Spoilers for the Wasp Trap and the Ending Explained

Jen’s Quick Take on The Wasp Trap

Original photo of The Wasp Trap on a bookshelf with other yellow books, a glass ov wine and silverware
  • The Wasp Trap blends quite a few tropes: friends with secrets, past present narrative, missing person.
  • As for subgenere, it’s on the dark side of suspense, almost a true thriller as most of it takes place in real time (except for those flashbacks, which I don’t think added anything.)
  • There was also a creepy house element. For me it was almost TOO much.
  • It does have quite a few twists and turns, but did all of them make sense?
  • Publication date: September 16, 2025 by Atria Books. Thanks to the publisher for the advance copy!

I wasn’t familiar with Mark Edwards, but he’s very prolific and perhaps more familiar in the UK. One Goodreads reviewer said she couldn’t believe this book was written by him. Which I’m not sure I understand as this book has many elements of his prior books. Maybe it’s the style? If you know, tell me in comments.

Readers on Goodreads are divided. Some loved all the twists and unexpected elements. Others found the characters flat, the plot implausible, and the flashbacks boring.

Character List for The Wasp Trap

I wasn’t planning on doing a character list, but I needed one so happy to share!

The Wasp Trap Gang from 1999:

  • Will: main narrator; now a writer
  • Lily: a coder; originally from Hong Kong. Now lives with her wife and children.
  • Sophie: biracial; makes jewelry; Will has always had a crush on her.
  • Georgina Howard: posh and blonde. She and her husband host the dinner party.
  • Theo Howard: Georgina’s husband.
  • Rohan: football and gadget fan

Other Characters present in the story

  • Sebastian Marlowe: the professor who originally brought group together at Thornwood. Now dead.
  • Callum: the chef at the dinner party
  • Amber: sous chef
  • Finn: Sebastian’s former assistant 
  • Mia Howard: younger daughter of Georgina and Theo
  • Dominic: Sebastian’s nephew; drowned in the lake at Thornwood.

Mentioned but not present:

  • Felix: Olivia’s ex
  • James: angel investor to Sebastian Marlowe
  • Olivia Howard: older daughter of Georgina and Theo
  • Barbara: Sebastian’s late wife, who was murdered.
  • Rupert Chadwick: writer who used to own G’s house
  • Eve: Sebastian’s housekeeper at Thornwood.

Spoilers for the Wasp Trap and the Ending Explained

There are multiple mysteries in The Wasp Trap:

  • Who killed Barbara, the wife of Sebastian Marlowe?
  • What happened to Olivia, Georgina and Theo’s daughter?
  • What is the secret that Callum and Amber are after?
  • What does 1999 have to do with ANY of this?

Leave any questions you have in the comments and I will attempt to answer them!

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!


I didn’t love the flashbacks, but as best as I can understand, Marlowe gathered the six students to help him program a dating app back in 1999.

This didn’t really succeed, but they decided to shift it into a test for psychopathy. They named it The Wasp Trap as the wasp is the psychopath of the insect world.


A row of pastel colored houses in Primrose Hill, London

In the present, the Notting Hill dinner party to celebrate the life of Sebastian Marlowe goes south when the internet stops working and Theo can’t find the key to get out of the house.

Will, the narrator, discovers that Callum and Amber have incapacitated Finn. They then shoot Theo.

Callum and Amber insist that one of the guests has a secret, and if they don’t spill it, everyone will die.


One by one, the guests reveal secrets, but they aren’t the right secrets.

  • We learn that Mia, the Howards’ daughter, is not at a friend’s, but hiding in the house.
  • We also learn that Finn was a private detective hired by Mia to find her missing sister.

Finally, Lily confesses her secret: the “Wasp Trap” she coded back in 1999 caught a psychopath: Dominic, the nephew of Sebastian Marlowe.

A computer monitor with code

In 1999, Lily also witnessed Dominic attacking Eve, Sebastian’s housekeeper. In an attempt to save Eve, she pushed Domniic from behind and he hit his head on a rock. She left him to drown and went to tell Sebastian.


Nope, not the right secret. Also Dominic is NOT dead. He pops up and is working with Callum and Amber.

In the end the secret they are after is: who saw Dominic and Sebastian putting Eve’s body and the branch Dominic hit her with in the lake?

There’s a melee. Amber and Callum admit to being a couple, and only interested inn Dominic’s money. 

  • Amber gets stabbed in the melee
  • Georgina fatally shoots Callum
  • Domnic shoots Sophie in the leg

We learn more secrets: Georgina is actually the psychopath. She switched test results with Dominic.

Also Georgina is the one who saw Sebastian and Dominic hide Eve’s body. She has a phone video and even saved the bloody tree branch.

Olivia found this out (I guess she found the evidence, plus Georgina’s journal, in the secret tunnels and confronted her mom, who murdered her.)

Mia, who has popped up using secret tunnels constructed by the house’s former owner, mystery writer Rupert Chadwick, is having none of her mother’s plans. She uses the tree branch to hit Georgina.

Black and white photo of people sitting in church pews during a funeral service.

In a flash forward, the remaining gang are attending the funerals of Theo and Olivia.

Georgina is in prison for Olivia’s murder, Dominic is in prison, Eve’s and Olivia’s bodies are recovered.

In an epilogue, Mia finds the original Wasp Trap test on an old computer and takes it: she’s a psychopath!

MY QUESTIONS:

If Dominic was not a psychopath, why was he a murderer? Because he THOUGHT he was a psychopath?

If Georgina was a psychopath, then why didn’t she do more with the evidence she had?

If Mia was a psychopath, why put so much effort into finding Olivia

What are your questions? Leave them in comments and spoilers are fine!

Categories // Reviews Tags // adult fiction, new books, spoiler discussion, spoilers, suspense, thriller

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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6 Comments
Jennifer
9 months ago

I 100% agree! That last twist about Mia should have been left out because it makes no sense for her to look for Olivia at all – much less to hire a private detective if she’s a psychopath.

I think Dominic just made a rash decision that he regretted with Eve.

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Jen Ryland
9 months ago
Reply to  Jennifer

Thanks – I always enjoy hearing what you think!

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Jennifer
9 months ago
Reply to  Jen Ryland

Do you understand why Georgina agreed to the dinner party?

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Author
Jen Ryland
9 months ago
Reply to  Jennifer

I have no idea. It doesn’t seem like the smartest thing to do when you have bodies buried in your garden!

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Ekb
14 days ago

Has anyone read the special edition of this with the bonus chapter at the end that tells more about one of the main characters (described as providing “Crucial backstory for a main character”) ? I can’t seem to find it anywhere and really wonder if it answers some of the questions I had after finishing this.

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Author
Jen Ryland
13 days ago
Reply to  Ekb

I checked the author’s website, Goodreads and Barnes and Noble and I don’t see that edition, sorry.

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Since 2011, I have been guiding avid readers toward books they will love and offering a friendly place to discuss them. I publish honest reviews that will help you decide if a book is right for you! Let's talk books! See my full bio!

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