When Nigel Baxter, a middle-aged married banker with an unremarkable past, is found dead in the bath of a plush hotel suite, his wrists slit, it looks as if he's taken his own life. At first. But when Detective Inspector Daniel Riley is assigned to the case, he soon realises all isn't as it first appears to be. When a postmortem shows Baxter was poisoned, Riley suspects foul play. And then there's the odd addition of a teddy bear left at the crime scene....

My husband and I are fighting for our lives in hospital after a terrible car accident. But despite my pain, all I can think about is what our families will find behind our front door. The scarf that has been all over the news, belonging to a dead young woman with honey-coloured hair. I have to speak to the police before my husband can. I’m drifting in and out of consciousness, but when I hear my wife talking to the police, accusing me of the murder of an innocent woman, a cold fear grips me. I know I’ve got a temper.

Everything changes when Mark comes home from a work trip with dark circles under his eyes. The police want to question him about the murder of a beautiful, blonde young woman. Mark swears he had nothing to do with it, that she was a colleague, nothing more.

The doorbell rings, just days after my beloved husband’s sudden death. I don’t recognise the woman on our doorstep, with her blonde highlights, a diamond bracelet identical to my own and a bouncing baby boy in her arms. As I show her inside, I notice her eyes grow wide as she takes in our spacious hallway, and the big squashy sofas that we all used to pile on. She glances at the silver-framed family photos and my little daughter hiding behind my skirts. She looks at me, her blue eyes serious. ‘I’m sorry’ she says. ‘I am your husband’s girlfriend. And this is his son.'

When I first walked into Jake and Megan’s immaculate home, I felt totally at ease. Sitting in the crisp white living room, they held hands and talked lovingly about their baby girl, Fern. As the weeks passed, I began to think I’d made a mistake in taking the job. Jake was overly friendly from the start, watching my every move and always offering to drop me home, even though it was out of his way. And Megan seemed to take pleasure in telling me off in front of her husband, blaming me for things I hadn’t done.