He Was a Liar - Daniel Hurst 1 (AudioBook) 

He seemed perfect. But he was a liar...
Sarah is in a loving relationship with Paul, a man she hopes to one day marry and start a family with, until his untimely death turns her world upside down.
Trying to come to terms with her loss, Sarah finds comfort in looking through Paul's old things, including his laptop and his emails. But after finding something troubling, Sarah begins to discover things about her late partner that she never knew before, and it seems he wasn't as perfect as she thought. As she unravels more about his secretive past, she ends up learning things that not only break her heart but things that the police would be interested to know too.
But it's only when she keeps digging that she realises that some of these secrets are also shared by people who are still alive. And they will do anything to keep them hidden...
He was a liar. And now she is in danger...