# I Know You Did It by Sue Wallman

I Know You Did It by Sue Wallman is a young adult thriller about Ruby, who starts at a new school and finds a note accusing her of a past secret. When students are found dead, the story turns to suspicion, possible framing and the danger Ruby may face.

- [Original product page](https://bargainpostbox.co.uk/product/i-know-you-did-it-sue-wallman-ya-thriller)
- [View offer](https://bargainpostbox.co.uk/visit/i-know-you-did-it-sue-wallman-ya-thriller)
- Market: UK
- Language: en-GB
- Currency: GBP
- Category: Books, Music & Hobbies > Books, Music & Movies > Books & Comics
- Price: 5.99 GBP
- Previous price: 9.99 GBP
- Discount: 40%
- Price checked: 2026-11-12T14:56:37.056Z
- Rating: 4.4 / 5
- Reviews: 1012

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Ruby finds an accusatory note in her locker on her first day at a new school.
- The plot centres on a death from Ruby's early childhood and two students later found dead.
- Listed as a winner of the Grampian Children's Book Award 2021.

## Pros

- A school-set mystery combines a protagonist's hidden past with a possible attempt to frame her.
- Customer feedback highlights plot twists, surprises, complex characters and engaging writing.

## Specifications

### Book details
- Author: Sue Wallman
- Publisher: Scholastic
- Publication date: 6 May 2021
- Edition: 1st
- Language: English
- Print length: 352 pages
- Reading age: 11 - 16 years, from customers
- ISBN-10: 0702302708
- ISBN-13: 978-0702302701
### Dimensions and installation
- Weight listed: 250 g
- Dimensions: 14.3 x 2.3 x 18.1 cm

## A good fit for

- Readers looking for a young adult school-set crime thriller with secrets and murder-mystery elements.
- Fans of twist-led teen mysteries and suspense involving an unreliable position of suspicion.

## Less suited to

- Readers seeking a light or non-threatening school story, as the plot involves deaths and a murder investigation.

## Customer feedback

Customer feedback describes the book as engaging, with a strong plot twist, surprises, complex characters and skilful writing. Pacing opinions are mixed: some readers say they finished quickly, while others found it slow. That contrast matters for readers choosing a fast-moving thriller, since the listing's fast-paced wording does not reflect every reported experience.
- Positive themes: Customer feedback praises the plot twists and surprises.
- Positive themes: Readers describe the characters as complex and believable and the writing as skilful.
- Mixed feedback: Pacing feedback differs. Some report finishing the book in under a day, while others find it slow-paced.

## Frequently asked questions

### What is I Know You Did It about?
Ruby finds a note accusing her of a secret on her first day at a new school. When students are found dead, she fears she is being framed or may be next.
### Who wrote I Know You Did It?
The book is by Sue Wallman, author of Lying About Last Summer and Dead Popular.
### How long is the book?
The listing gives a print length of 352 pages.
### What age range is listed?
The listing gives a reading age of 11–16 years and attributes that guidance to customers.

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## Images

![I Know You Did It by Sue Wallman — 1](https://bargainpostbox.co.uk/i/zt6dreMDrRYD9sPdYOVWUlhFSr9hWNfBxg8_KoXbe8ol0FlQgBCnTtuI84xTqEMgVuVkCpUDSm-pv4FGzqaU5OdS4PPUGmFqXe2vWxwTpUHiRhDiAeUS.jpg)

![I Know You Did It by Sue Wallman — 2](https://bargainpostbox.co.uk/i/38ml1hZ0ZRXFUWzWszIvFkqVtY9LPXhkZbsGkCD1rxLA2Ufg3eOC1iM6fg6A4ZULwD80QxR-3EVLT-beZdu1lX0ErB9noxP_qpk9_83yplK4ijzcoDDK.jpg)

![I Know You Did It by Sue Wallman — 3](https://bargainpostbox.co.uk/i/Sg9oGp9Fk4W1ownUZ8UGaREJYMtgvXNCwJg4aEGQxL4CY0QZfUp_hBmVArUzOmdromHuvvAXg09hrI10nj7bJdY2mox5W0I8v8s5waeHockL5WAF0QRG.jpg)

![I Know You Did It by Sue Wallman — 4](https://bargainpostbox.co.uk/i/Plbf8l21J8kaKZTtkyc0gfe_n03Ays9OipkC5UUJO3OvUlpH_ZnMpKw5Y9bF8pbNj3Vh_j28RyWbFNmvCfNeGY6i18y1kboLYSPoe1dDYPhAbznOOUrf.jpg)

![I Know You Did It by Sue Wallman — 5](https://bargainpostbox.co.uk/i/PG3IfJ7rwfn0kvaLyKkrUHJM_mbZq8piEh-UfVLYMOXjLM70ngEVJ4ZMXJ8nDPiB3yqk_JN2zP_exojxngD31kUGQl7s2RJm20Q9sj6xZ7kqH1TWbHFa.jpg)

![I Know You Did It by Sue Wallman — 6](https://bargainpostbox.co.uk/i/pFv7Ntpit8jMmVn0Ql1RTwDI-ljvPCOccRYZ2V8QGGXIwJHc0kAaSRa8mZVjZ8Eo__hnb_UUjJgADqgtBYKUG6ujN_qp8nLmr59_fIPC134Uv2AVnnwH.jpg)

![I Know You Did It by Sue Wallman — 7](https://bargainpostbox.co.uk/i/HvGntx0Pw8oZk1maq_yOTyDKLRlULgPUIT6e8EC-b9PHBcN7k-rTAuVeI6F5VJqOXbW6-tFYsH5kDw82pUvF3QYhxIacsulPZxWxnh66n7gTEwVBPDyQ.jpg)