Have you ever looked at those mothers who seem to be perfect - with sweet little children, a full-time job, a beautiful home - and thought: am I not good enough? Ava has. She's desperate to become just like them. That's exactly why I'm here...

'Don't worry, I'm here to help!' I say with a big smile. I can see the relief in Ava Green's face. She has two beautiful children, a charming husband and a high-flying job. But there is so much stress in the lines around her eyes. She worries she isn't good enough. I understand.

Before she knows it, I've cleaned the kitchen and offered to babysit her two little girls. It's not why she hired me, but I like to go above and beyond. I'm just glad she didn't check my application too carefully. Because even before we met, I made sure I knew everything about Ava and her lovely little family...

Her husband never helps out. He takes phone calls at strange times. He's hiding something - and Ava is close to breaking point. Those poor children.

But everything will be okay. I have plans for Ava. She just has to trust me...

This book was previously published as The Assistant.

A completely addictive psychological thriller that will have you gasping at the final twist. Fans of Shari Lapena, Lisa Jewell and The Perfect Marriage will be reading late into the night.

Read what everyone's saying about Not a Good Enough Mother:

'OMG, this was such an amazing book... So gripping it was hard for me to keep it down... The ending was literally mind-blowing.' Goodreads reviewer

'What a book! I was hooked... Extremely gripping... I literally couldn't put this down.' Jessica's Book Biz, ?????

'Caught my attention IMMEDIATELY and had me hooked until the very last page. I thought I knew where this book was going... man oh man was I surprised!... absolutely gripping... will have you glued to the pages... You will inhale this book and forget all your responsibilities... I couldn't finish this book fast enough. Goodreads reviewer, ?????

'Wow! What a story! Absolutely loved everything about this book.' Goodreads reviewer, ?????

'Loved!!!!! It was such a roller coaster for me and left me speechless.' Blue Moon Blogger, ?????

'Wow!!! I was completely hooked from start to finish! Every chapter left me hanging... I just couldn't stop myself from reading more... I devoured the whole book in two sittings. Even though I'm exhausted today, it was totally worth it! My heart was racing the entire time... The ending was mind-blowing... Incredible twist! I honestly can't remember the last time a book left me so stunned.' Goodreads reviewer

'You won't be able to put this down!... the end comes and slaps you across the face! Wow wow wow!!!!!!... Wish I could give more stars!.. Amazing book!' Goodreads reviewer