Stuart Turton meets The Magpie Murders in this immersive and unique story for fans of clever crime fiction.

Imagine you’re holding a book in your hands. It’s not just any book though. It’s a tête-bêche novel, beloved of nineteenth-century bookmakers.

It’s a book that is two books: two intertwined stories printed back-to-back. Open the book and the first novella begins. It ends at the middle of the book.

Then flip the book over, head to tail, and read the second story in the opposite direction. Both covers are front covers; and it can be read in either direction, or in both directions at once, alternating chapters, to fully immerse the reader in it.

1880s England.

On the bleak island of Ray, off the Essex coast, an idealistic young doctor, Simeon Lee, is called from London to treat his cousin, Parson Oliver Hawes, who is dying. Parson Hawes, who lives in the only house on the island – Turnglass House – believes he is being poisoned. And he points the finger at his sister-in-law, Florence.

Florence was declared insane after killing Oliver’s brother in a jealous rage and is now kept in a glass-walled apartment in Oliver’s library. And the secret to how she came to be there is found in Oliver’s tête-bêche journal, where one side tells a very different story from the other. 1930s California.

Celebrated author Oliver Tooke, the son of the state governor, is found dead in his writing hut off the coast of the family residence, Turnglass House. His friend Ken Kourian doesn’t believe that Oliver would take his own life. His investigations lead him to the mysterious kidnapping of Oliver’s brother when they were children, and the subsequent secret incarceration of his mother, Florence, in an asylum.

But to discover the truth, Ken must decipher clues hidden in Oliver’s final book, a tête-bêche novel – which is about a young doctor called Simeon Lee . . .