The most perfect lives can hide the darkest secrets…
Mary has everything. Beautiful and rich, she lives on an exclusive street in the heart of the city, in a house with gorgeous views and an immaculately maintained garden. Her life looks perfect.

But behind closed doors the truth is very different. Her husband Andrew barely speaks to her, spending his days down in the basement alone. Her teenage nephew is full of rage, lashing out with no warning. Her carefully constructed life is beginning to fall apart.

And then someone starts sending Mary anonymous notes, threatening her and her family…

Everyone has secrets. But is someone at number 13 hiding something that could put the whole family in danger?

A twist-filled thriller with an ending that will shock you to the core. Perfect for fans of The Couple Next Door, Lies and Behind Closed Doors.

Read what everyone is saying about S.D. Monaghan:
‘I was completely and utterly gripped!… I flew through the pages like a woman on a mission. I just had to find out what the hell was going on!… Kept my heart racing, my hands shaking, and my heart on route to my mouth; I just couldn't put the book down!’ The Writing Garnet, 4 stars

‘Hooks you from page one… Readers will feel the thrill right from the beginning and they won't be able to put it down until the very last page… I enjoyed reading every second of it and didn't want to put it down.’ Goodreads reviewer, 4 stars

‘Wow! What can I say, I absolutely loved this book… Kept me hooked from the beginning and I couldn't turn the pages quick enough!’ Goodreads reviewer, 5 stars

‘Wowzers, what a read!... This book had more twists than a big bag of twisty things… A really interesting and gripping read.’ I Love Reading UK, 4 stars

‘I read it in a day… This book drew me in hook, line and sinker… Very well written, pacy and with excellent characters… A fantastic 5 star read.’ Goodreads reviewer, 5 stars

‘A fast-paced thriller that thrilled me from the beginning until the end… I loved it!’ Bookaholic Swede, 4 stars

‘I read this in one sitting and was gripped from page one!’ The Quiet Geordie, 5 stars

‘Twists and turns galore, each drawing the reader deeper.’ Good n Ready, 5 stars

‘This book was thrilling! I couldn't predict the ending at all. So many twists and turns my head was spinning!! Read this!’ Goodreads reviewer, 4 stars

‘A sinister and satisfying read… The deeper into the storyline I got the more it got its claws right under my skin! The plot itself was extremely clever, full of twists and extremely addictive; I read this book in one sitting. An enjoyable, compelling and twisted read that will hook you in…