Good Sister, Bad Sister (Paperback) (ISBN-13: 9781805572831)

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 ⭐⭐⭐⭐⭐

Author: Jill Childs
ISBN-10: 1805572830
ISBN-13: 9781805572831
Publisher: Boldwood Books Ltd
Language: English
Published: 03/11/2026
Pages: 416
Format: Paperback
Weight: 1.15lbs
Size: 9.21h x 6.14w x 1.03d
Large Print