I look at where the woman was sitting. There's a scrap of paper tucked into the gap between the seats. With shaking hands, I pick it up. The note reads: Help me.

At first glance, the couple on the train look normal. She's dressed smartly, a floral patterned bag on her lap. But her hands are clenched, her fingers white. The man with her has his arm looped through hers, but not in a comforting way. He's holding her too tightly.

She catches my eye and I see desperation there. I'm opening my mouth to speak when the train grinds to a halt and the man stands, hauling her away. She looks at me again, then at the seat behind her, her face pale.

I find the message she left behind. Help me.

When I call the police, there's no sign of the couple on CCTV. The kind detective gently suggests that it's not surprising, with my history, that I am imagining things. Wanting to save someone.

I know what I saw. If no one will believe me, I'll find her myself.

But as I search, what I find seems personal. Little things that remind me of what happened ten years ago. And I think I'm being followed, that someone broke into my flat.

The hunt for the woman on the train is leading me somewhere I should never go. Can I save her, or will I be next?

A completely compulsive thriller that will have you on the edge of your seat! If you like Lisa Jewell, Andrea Mara and Shari Lapena, you'll love The Couple on the Train.

See what readers are saying about The Couple on the Train:

'I couldn't put it down, it had me gripped throughout!... it was very unpredictable and I had no idea what would happen next!... had it all from tension, betrayal to double-crossings! Wow, what a final explosive ending, it had me gasping for breath and on the edge of my seat!' NetGalley reviewer, ⭐⭐⭐⭐⭐

'Wow, I can't wait for this one to be turned into an ITV drama... edge-of-your-seat thriller that keeps you guessing right up to the end and questioning everyone... a brilliant twist that you won't see coming!' Book Lovers Anon UK, ⭐⭐⭐⭐⭐

'Super fast-paced... I devoured it in a few hours... loved it!!... a superb novel!!!' Goodreads reviewer, ⭐⭐⭐⭐⭐

'Addictive and exciting... keeps you turning the pages and guessing until the end. Full of shocking twists and turns, and what an ending! Loved it!' Goodreads reviewer, ⭐⭐⭐⭐⭐

'Such an intriguing thriller which had me gripped throughout... There was so much tension throughout I could not put it down... really needed to find out how it was going to end and wow what a surprise ending it was... fantastic.' NetGalley reviewer, ⭐⭐⭐⭐⭐