Sherlock Holmes and the Three Winter Terrors (out October 2021) is a novel told in three parts. Here’s the publisher’s blurb:

1889. The First Terror.
At a boys’ prep school in the Kent marshes, a pupil is found drowned in a pond. Could this be the fulfilment of a witch’s curse from four hundred years earlier?

1890. The Second Terror.
A wealthy man dies of a heart attack at his London townhouse. Was he really frightened to death by ghosts?

1894. The Third Terror.
A body is discovered at a Surrey country manor, hideously ravaged. Is the culprit a cannibal, as the evidence suggests?

These three linked crimes test Sherlock Holmes’s deductive powers, and his scepticism about the supernatural, to the limit.

And here’s that cover image:

It’s another bang-up job from designer Julia Lloyd, which manages to incorporate elements from each of the sections into a seamless whole.