#BookReview I Know What You’ve Done By Dorothy Koomson @DorothyKoomson @Mobius_Books @headlinepg #IKnowWhatYouveDone #DorothyKoomson #MobiusBooksUS Title: I Know What You've Done

Author: Dorothy Koomson

Published by: Headline Books on Apr. 26, 2022

Genres: Mystery/Thriller

Pages: 432

Format: Paperback

Source: Mobius Books US

Book Rating: 8/10

Do you have any idea what the people you know are capable of?

Bestselling author of All My Lies Are True, Dorothy Koomson, asks how well you can really know your neighbors. Fans of Lisa Jewell and Louise Candlish will rip through the pages of this addictive new thriller.

What if all your neighbors’ secrets landed in a diary on your doorstep?
What if the woman who gave it to you was murdered by one of the people in the diary?

What if the police asked if you knew anything? 

Would you hand over the book of secrets? 

Or … would you try to find out what everyone had done? 


Brisk, intense, and ominous!

Know What You’ve Done is a tortuous, simmering thriller that introduces us to Rae, a young mother who, after the recent attempted murder of one of her neighbours, discovers that no one is who they claim to be, everyone has something to hide, and danger lurks around every corner, especially for the one person who has possession of Priscilla’s coveted, tell-all journal.

The writing is edgy and tight. The characters are consumed, troubled, and secretive. And the plot is an unnerving, suspenseful tale of deception, manipulation, suspicions, revelations, nefarious intentions, indiscretions, corruption, mayhem, and violence.

Overall, Know What You’ve Done is a sinister, atmospheric, twisty whodunit by Koomson that does a wonderful job of highlighting just how easily people can be emotionally and psychologically exploited, and reminds us that even those we think we know so well often have deep, dark secrets they choose to hide.


This novel is available now.

Pick up a copy from your favourite retailer or from one of the following links.




Thank you to Mobius Books US for providing me with a copy in exchange for an honest review.


About Dorothy Koomson

Hello, my name's Dorothy Koomson and I'll try to make this bit that's all about me as interesting as possible.

I wrote my first novel called There's A Thin Line Between Love And Hate when I was 13. I used to write a chapter every night then pass it around to my fellow convent school pupils every morning, and they seemed to love it.

I grew up in London and then grew up again in Leeds when I went to university. I eventually returned to London to study for my master's degree and stayed put for the following years. I took up various temping jobs and eventually got my big break writing, editing and subbing for various women's magazines and national papers.

Fiction and storytelling were still a HUGE passion of mine and I continued to write short stories and novels every spare moment that I got. In 2001 I had the idea for The Cupid Effect and my career as a published novelist began. And it's been fantastic. In 2006, my third novel, My Best Friend's Girl was published. It was incredibly successful - selling nearly 90,000 copies within its first few weeks on sale. Six weeks later, it was selected for the Richard & Judy Summer Reads Book Club and the book went on to sell over 500,000 copies. Oh, there I go again, this is meant to be about me, not my novels.

Okay, back to me. I recently spent two years living in Sydney Australia, and now I'm back in England. But I can't say for how long I'll be in the UK because I've been well and truly bitten by the travel bug.

Photo courtesy of Author's Website.

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