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 ⭐⭐⭐⭐⭐