The burrowers beneath

This was a fun but not earthshaking (oh-ho-ho) addition to the Cthulhu Mythos.

The book has a lot of fun ideas. The subterranean squid-like Cthonian creatures themselves are great. The Wilmarth Foundation, a secret organization of like-minded individuals working against the Mythos, is also an interesting addition to the canon. The execution of the book is a bit less than ideal, however.

The book is structured as an epistolary novel, composed of both letters and diary entries from a variety of characters. Some of the letters are very atmospheric and engrossing. The stories about about a mine inspector who encounters extraterrene eggs and a coastal rig that strikes more than oil stand out in particular. The result is a bit uneven, with mostly self-contained vignettes that are actually more entertaining than the primary narrative. And although he's positioned as the protagonist, Titus Crow is a passive figure for much of the book, either being directed by or receiving exposition from helpful supporting characters that seek him out.

While apparently set in the modern day (the early 1970s, when the book was published), Lumley's obvious affection for Lovecraft and old-fashioned gentleman's club occult detective yarns leads to a story that seems strangely untethered in time. Lumley's master occultist character Titus Crow seems like he'd bemore at home in one of William Hope Hodgson's Edwardian "Carnacki, The Ghost-Finder" stories and Crow's Watson-style sidekick Henri-Laurent de Marigny also seems like a similar throwback to an earlier era. It felt a bit off reading about these smoking jacket / brandy snifter types discussing atomic testing.

There are some creepy moments as the Cthonians' capabilities are gradually revealed, but they don't get as much time in the spotlight as I would have liked. For ageless, godlike beings they turn out to be pushovers once the humans in the story figure out what's going on and get their act together. Apart from one fascinating scene detailing an attack on a massive captive Cthonian, the expulsion of the Cthonians from the British Isles is mostly glossed over. The book's conclusion feels like "Yeah, we lost some guys along the way but things mostly went according to plan."

It's also interesting to note that the Cthonians only start acting directly against humans when their eggs are stolen or tampered with. They don't seem like much of a menace to humanity otherwise, apart from worshipping unappealing alien gods. In this aspect they brought to mind the misunderstood Horta from the original Star Trek episode "The Devil in the Dark."

Some readers describe Lumley's Cthulhu Mythos output as Lovecraft fan-fic. While that feels a bit uncharitable, it's not wrong, either. Lumley also borrows heavily from August Derleth's reinterpretation of the Mythos, where human beings have a certain level of Elder God support in the war against the "evil" Great Old Ones. Star-Signs of Mnar are wielded like crucifixes in the face of "CCDs" (Cthulhu Cycle Deities). While this sort of thing can be fun—I personally believe the Cthulhu Mythos is a sort of "big tent" that can accomodate everything from "The Dunwich Horror" to "Bride of Re-Animator"—readers hoping for actual cosmic horror are likely to be disappointed.

I enjoyed this book, but Lovecraft purists are better off reading something closer to the original source.