I am of two minds with this novel just as there are two authors. This weird classic of Radium Age Science Fiction was developed by the collaboration of two friends working in a shoe store, each who wrote approximately half of the book somewhat independently rather than seamlessly meshing their ideas into a cohesive story. Hence, you have a very bipolar work of fantasy that just doesn't quite know what it wants to be.
The first half of the novel is a slow burn of creepy paranormal phenomena in an old house and meandering mysterious characters that really invokes a feeling of awe and wonder like William Hope Hodgson and Arthur C. Clark. The second half is much more straightforward adventure and fantasy narrative, complete with airships and ray guns, villains dressed in Romanesque armor and wise ones clad in robes, bubble-shaped dwellings in vast alien metropolises under an inverse night sky where the stars are black and the rest a glowing silver.
I much prefer the first 17 chapters. Other reviews have commented that these can be hard for the reader to get through, but I found it to be more engaging for me because of the feelings of mystery and a sense that something beyond nature as we know it was leaking into our reality. It was chilling and set up a really interesting scifi premise. A professor mysteriously disappears on the day he was to give a groundbreaking lecture on the occult while at the same time an elegant stranger named Rhamda Avec arrives looking for a magic ring. This ring is the key to opening a portal into another dimension, the Blind Spot, which seems to center in the parlor of an old Victorian mansion. It seems whoever wears this ring gradually has their lifeforce sucked out slowly and hideously over 6 months. How is all this connected?
Then comes the pulp sensibilities, complete with BOLD-FACED emphases and many sentences polished off with an exclamation mark à la Edmond Hamilton. The mystery disappears and now the reader is thrown into a pretty generic sci-fi fantasy world that we've seen before in Edgar Rice Burroughs adventures.
Now normally there is nothing wrong with this amount of variety in a novel, but the execution here is jarring. I didn't find the second half to adequately satisfy my curiosity built up earlier in the book. Not only that, but the second half starred a protagonist, Chick Watson, who played an important role but was not featured prominently in the first part of the novel. Therefore, the reader had to abruptly stop investing in the previous protagonists, Harry and Hobart, who were an interesting couple, no doubt based on the real relationship between the authors.
Chick Watson is a bore. He prances around arrogantly in an alternate universe after passing through the Blind Spot when the ring drains almost all of his energy. When he arrives on the other side, he remains in a coma for 11 months. When he wakes up, most people take him for a visitor from the spirit world, but one dashing priest is smitten with Chick's muscular and athletic physique and challenges him to hand-to-hand combat. Chick accepts this challenge confidently, as he had never lost any athletic competition before. The guy was an emaciated mess hanging out in burlesque bars and getting smashed on brandy in the first half, and now he is a superhero after an 11-month coma? I can suspend my disbelief as much as any scifi and fantasy fan, but this kind of thing is just insulting.
The structure of the novel is as bizarre as its contents. Going from a first person account by Harry, then to a real-time transcription of a recorded message, to testimony from Harry's girlfriend Charlotte, to another first-person narrative from Hobart's point of view to yet another first person narrative from someone else, to the first-person retelling of a story from Chick Watson, to an abrupt shift to "Editor" commentary, to third-person omniscient narration.
Whew! Couldn't they have just written the whole book in third-person omniscient?
Another pet peeve of mine is overuse of a literary device, and in this case, both authors share blame for the same violations of delayed gratification and promised payoff. Some character always has a secret or key to a mystery, and when others try to get some resolution, they and the reader are told, "Not yet," or "I will tell you all you wish to know, but first..." or "There's no time for explanations now," or "You are unable to handle the truth," or "Let's go into another room first." This drags things on and on needlessly. Even in the last 10 percent of the book, this is done THREE TIMES IN ONE PAGE! I mean, forget it! I don't want to know anymore!
It doesn't spoil anything to say that the end does provide some interesting conjecture regarding the afterlife and the possibilities of endless realities between the spaces of the atom, but it is crammed in the last two pages and really wasn't worth the wait. The rest of the end was just as rushed, with many interesting characters who had been built up in the beginning literally disappearing from the plot. Most unforgivable was that Rhamda Avec, the mysterious man from another world who seemed to be the prime mover of events in the first half, is never seen again in the second, so ultimately this interesting character's arc just ended midstream. Perhaps the authors were setting these characters up for an appearance in a sequel, and Austin Hall did go on to make a second book, but that is one I will likely not bother reading.
So what a disappointment. This thing started off strong for me and promised an intelligent, mind-blowing piece of weird fiction with homoerotic undertones and devolved into a poorly written kid's adventure. Normally, I'd enjoy the wrestling matches and ray guns as much as a Lovecraftian eldritch metaphysical speculation. But both of these elements clashed head-on and splintered the whole novel into an incomprehensible and unsatisfying mess.