This audiobook is narrated by an AI Voice. Joe Slater is a Catskill mountain degenerate awaiting trial for a murder he committed in a fit he cannot remember. He is illiterate, brutish, and dying, and the state asylum has him under observation.

But when the fits take him, something else speaks through his mouth. It speaks of green light and vast rushing space, of a shining enemy to be pursued across gulfs no human tongue could name, and it speaks in a language and imagery utterly beyond the wretched man who houses it.

One young intern begins to suspect that Slater's dreams are not dreams at all. He builds a device to join his own sleeping mind to the dying man's, and in the last hours before the end, he learns what has been imprisoned inside that skull, and what it intends to do when the body finally fails.

An early tale of cosmic scale and radiant terror, ending in a line of astronomical fact that the reader will not forget.