Out now, from Bantam: ebooks of The Sword of Albion and The Scar-Crow Men.

Elizabethan spies, supernatural threat, and the forces of Faerie – just in time for Christmas (or the holiday of your choice).

Here’s artist John Picacio’s cover for the Pyr edition of Jack of Ravens, Book One of Kingdom of the Serpent. Out in March, with books two and three to follow in subsequent months.

For US readers, this is the final trilogy of the nine-book sequence that began with Age of Misrule. Jack Churchill returns, along with the Brothers and Sisters of Dragons, Fabulous Beasts, Celtic gods, Ragnarok, the Otherworld and the wrapping up of every single plot-thread wound over the series.

Can I suggest to all the readers who have been complaining about Gollancz’s failure to reprint the long-sold-out UK version to pick this up on import. It should be available on both Amazon and the Waterstone’s site.

Experts have identified the precise location in Wales of some of the megaliths used in the construction of Stonehenge.

It’s a pretty major achievement to discover the location of the millennia-old quarry down to a few metres, but this also throws up some new mysteries. The rhyolitic rocks differ from all others in South Wales. The presumption is that they were chosen for a specific reason. How were they identified and why? There has been some interesting work done elsewhere into the acoustic qualities of particular stones at prehistoric sites. Is this important?

And this discovery has also kicked a hole in theories of how the stones were transplanted to Salisbury Plain. A consensus was growing that they were floated on rafts along the coast, but the exact location’s inaccessibility to water makes this unlikely. The old geologic theory – that the stones were pushed by advancing glaciers from Wales to Wiltshire during the ice age – is pretty flimsy as there aren’t any other Welsh rocks scattered around the Plain.