# Good Sister, Bad Sister - Paperback

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by **Jill Childs** (Author)

A BRAND-NEW heart-pounding psychological thriller from international bestseller Jill Childs, perfect for fans of Lisa Jewell, KL Slater and Freida McFadden

**A hidden bond. A deadly betrayal...**

When **Arabella** learns she was adopted, her perfect life begins to crack. A lost birth mother, an unknown twin, and rising jealousy pull her into a spiral of obsession.

**Helen**, starting over in a quiet Cornish town, meets Arabella by chance. Their connection is instant - two fragile women offering each other help. But when Arabella vanishes to seek support for her unravelling mind, Helen is drawn into her home, her family - and her life...

As sinister events escalate, Helen begins to doubt everything: Arabella's mysterious illness, her too-charming husband, and the secrets locked behind closed doors.

By the time she uncovers the truth, it may be too late.

**Dark, twisty, and addictive, _Good Sister, Bad Sister_ is a gripping psychological thriller about sisterhood, obsession, and how far we'll go to rewrite the past.**

**Praise for Jill Childs:**

'**Brilliant, thrilling and fiendishly addictive.** The author masterfully takes us on a journey, packed with twists. **A book I cannot put down and one I will be thinking about for a very long time.'** Renita D'Silva ⭐⭐⭐⭐⭐

'**A chilling, edge-of-your-seat read that will knock the life right out of you!!** A must read!! Another **brilliant author** that keeps you entertained from the very first page!!' Goodreads reviewer ⭐⭐⭐⭐⭐

'**Omg! I was blown away... This absolutely got under my skin...** I was not able to put the book down. It literally made an hour on the treadmill feel like 3 minutes! Just perfect! **I loved every second of it.**' Goodreads reviewer ⭐⭐⭐⭐⭐

'**Oh wow... once I started I could not put it down... So many twists...** when you think you know how it's going to end boom another twist... **Fantastic.**' NetGalley reviewer ⭐⭐⭐⭐⭐

**Number of Pages:** 416

**Dimensions:** 1.03 x 9.21 x 6.14 IN

**Publication Date:** March 11, 2026

**Large Print:** Yes

## Details

- **Price:** 53.98 GBP
- **Vendor:** BooksCloud
- **Type:** Books
- **Tags:** Books, Fiction, Psychological, Thrillers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 53.98 GBP | In stock |

## Images

- Good Sister, Bad Sister

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> Source: [Somiibooks](https://somiibooks.com/products/good-sister-bad-sister-paperback-1)
> Updated: 2026-08-22