This novella combines Celtic folklore with a sci-fi twist. “The Otherworld” of the ancient tales, whose power is said to wax with coming of the dark half of the year, is here portrayed in the form of aliens rather than fairies or ghosts.

The book follows a pair of researchers, Dr. Siobhan Ryan and Dr. Michael Sullivan. There’s a Mulder/Scully-esque Believer vs. Skeptic vibe between them, which emerges as they witness increasingly strange phenomena. It begins with crop circles and other extraterrestrial appearances in the quiet village of Clooncara, followed by visions experienced by the town’s children, and soon escalating to even more bizarre, and more terrifying, events.

The story reminded me a little of Arrival, a little of Childhood’s End, and maybe just a dash of Lovecraft thrown in when describing the alien world. That is all to the good. On the other hand, some of the decisions made by the scientists reminded me a little of Prometheus. They might have been a bit more careful when dealing with world-threatening aliens.

But then again, we would have precious few good scary stories if characters behaved intelligently or cautiously. Let’s face it, practical thinking is antithetical to good horror, as is perhaps best illustrated by this Far Side cartoon that I was thinking about recently. So I could live with some poor decision making by our protagonists.

I liked the idea of the energy in the air as Samhain approaches, and indeed, I think this is a real phenomenon which careful students of Halloween can observe. Obviously, there was something about the changing of the seasons that has caused this part of the year to be celebrated since ancient times, and I like the notion that the old rituals were only other forms of what modernity dubs “space aliens.” The line between archaic superstition and modern scientific speculation can be a mighty fine one.

All in all, this is a good mix of sci-fi and folkish fantasy, and perfect reading for this most eerie time of year.