"The Coming Thing", according to Brisco County, Jr., was something on the edge of the horizon, having not quite arrived yet. He did not know for sure what it was, but felt that it would come, perhaps at the start of the 20th century.
- "The Coming Thing" is a recurring term used by Brisco throughout the series. It is never clearly indicated what it is, or even that Brisco knows what it might be. It could be speculated that it is a metaphor for the future, or the unknown.