A girl stands on the doorstep, her hands tremble and her eyes glisten with tears. My sister has finally come home after six long years.

I gasp in disbelief when I meet my younger sister’s gaze. I can’t believe I’m looking at Lydia’s sweet face again. We’d been so close as children. Then one day she didn’t come home from school, and she disappeared without a trace.

Having Lydia back at home is the best thing that’s happened in years. Only I can’t shake the feeling that something isn’t right. She doesn’t remember any of the stories I tell about our childhood, she’s even forgotten her long bouts of illness. When I ask about the day she vanished, she says she doesn’t recall what happened.

I want to be close to my sister again more than anything. But when I find a strange message hidden in her room, I begin to suspect the girl who came home isn’t my sister at all. Who is she? And what really happened to Lydia?

I’m convinced I’m living with an impostor. And I will stop at nothing to expose the truth…

An absolutely gripping and addictive psychological thriller that will keep you turning the pages until late into the night. If you love The Housemaid, Gone Girl or The Other Daughter, you’ll adore Not My Sister.

Readers love Rosie Walker:
‘Had me in a hold from the first page… I devoured it in less than 24 hours! Full of twists and turns… Loved it!’ NetGalley reviewer ⭐️⭐️⭐️⭐️⭐️

‘From the moment I picked this book up, I was hooked… I even stayed up late reading… I loved it!… My favourite… The ending was one word: WOW!’ Arcreviews_by_m ⭐️⭐️⭐️⭐️⭐️

‘Wowsers… Just wowsers! I really was blown away! I absolutely did not see that twist coming.’ Jsybookworm ⭐️⭐️⭐️⭐️⭐️

‘Addictive. I finished it in one day because I just couldn’t put it down.’ B for bookreview ⭐️⭐️⭐️⭐️⭐️

‘Comes at you with both barrels and knocks you out of your shoes!’ Goodreads reviewer ⭐️⭐️⭐️⭐️⭐️

‘Oh my god!… Absolutely thrilling! Full of twists and turns. My jaw was hanging open.’ Jessicasbookbiz ⭐️⭐️⭐️⭐️⭐️