'I'm sorry, Sam's not available, ' says the woman who answers my husband's phone. I can't place her voice, so I politely ask who she is. Her answer sends my world spinning out of control: 'I'm his wife.'

I know I want to marry Sam the moment I meet him. After I lost my beloved mother so suddenly, this charming, softly spoken architect with his deep-brown eyes is just the fresh start I've been searching for.

I'm delighted to be expecting our first child before we've even had a chance to plan a honeymoon. I want our family to work so I try to ignore his long work trips. I turn a blind eye to the private calls he takes and I listen to his excuses about why the money keeps disappearing from my bank account. After all, he has no idea what I've been doing in our house whilst he's away or how I really made that money.

Then I find out Sam's got more to hide than I ever imagined was possible. Because my husband is leading a double life. He's already married to someone else.

But what Sam doesn't know is that he's not the only person keeping secrets.

And he has no idea how far I'll go to protect myself...

A totally unputdownable, twisty, will-leave-you-gasping story of marriage, guilt and lies. If you love Lisa Jewell, Gillian Flynn and Paula Hawkins, you will not be able to sleep until you've finished every last page of The Bigamist.

What readers are saying about Rona Halsall:

'I was on the edge of my seat and through bleary eyes, I read this in one sitting well into the early hours of the morning. Make sure you have nothing else on when you start... as you will not be able to tear yourself away!' Once Upon A Time Book Blog

'Wow!!!! Absolutely fantastic, unputdownable... Kept me on the edge of my seat and then in the edge of my bed until late at night as I just could not put it down!!!... I was captivated' Bookworm86

'WOW! A page turning suspense filled novel that I was unable to put down!!!! So many twists and turns I was on the edge of my seat and didn't sleep till I finished it!!... LOVED THIS!' Goodreads reviewer

'My jaw hit the floor... I'm still reeling... I was on the edge of my seat wondering what would happen next... Utterly riveting... outstanding.' Emma's Biblio Treasures

'My heart was pounding... My nerves were in shreds!... Superb! This is one book that I couldn't put down.' NetGalley reviewer

'OH MY DAYS!! I mean seriously OH MY DAYS! Yes, I have to shout this! This book has blown me completely away... As soon as you open the book you are hurtling so fast that you need a minute to take a breath... my head is still spinning from it all! Blinding!' Zooloo's Book Diary

'Wow!... Had me on the edge of my seat from the very beginning... Had me guessing and guessing again... Grips you from the very beginning and is one you don't want to put down!' Goodreads reviewer

'OMG... Incredible... I couldn't put it down and simply had to read in one sitting... I loved this.' Nicki's Life of Crime

'Wow!... had me gripped from the very first page and I could not put it down. There were so many twists and turns I became dizzy!... Make sure your calendar is clear as you won't be able to put it down!' Goodreads reviewer

'Seriously addictive... You really won't be able to put it down!... Will keep you guessing all the time, there's so many twists and turns, and it's so tense... Will keep you totally gripped. One of the best psychological thrillers I've read.' Sibzzreads