Claire Douglas

It would be hard to pick just one single book for Claire Douglas’ “best” as her novels have consistently become Sunday Times bestsellers. If we were to narrow down the list, we think The Couple at No.9, The Wrong Sister and The New Neighbours are all contenders for the “best” representation of Claire Douglas. Each features shocking twists and truly goosebump-inducing tension all hidden in everyday settings you’ll be able to put yourself in.

Claire Douglas writes standalone psychological thrillers, which means every book introduces a new cast of characters, a fresh mystery and a whole new collection of secrets waiting to be uncovered. You don’t need to worry about reading anything in a particular order and can start with any book you’d like.

If you’re not sure where to begin, we’d recommend The Couple at No. 9. It’s one of her most successful novels and contains relatable characters and genuinely surprising twists that every Claire Douglas thriller is loved for.

Claire Douglas’s latest thriller is The Family Friend, which was published in the UK in March 2026. When Imogen inherits a house from a woman she hasn’t seen in sixteen years, she thinks it’s a chance for a fresh start. Instead, she finds herself uncovering secrets that someone would rather stayed hidden forever.

At the time of writing, no subsequent novel has been officially announced, but we don’t think we’ll have to long to wait before hearing what Claire Douglas has in store for us next.

If you’ve reached the end of Claire Douglas’s backlist and are already wondering when her next book will arrive, we think you’d love psychological thrillers from Lisa Jewell or Gillian McAllister.

Like Douglas, Jewell and McAllister specialise in taking ordinary lives and introducing just enough secrets, lies and suspicion to make everything completely unravel. They’re perfect for readers who love domestic suspense, unreliable narrators and twists that genuinely catch you off guard.