Here are entered works on theories that postulate that certain events or phenomena occurred as a result of conspiracies among interested parties. Works on a particular event that is considered by some to be the result of a conspiracy are entered under the heading or headings appropriate for the event.
Here are entered speculative works of history that present alternative outcomes of historical events and subsequent changes in history. Collections of fiction in which the plot or setting assumes an alternative outcome of an historical event are entered under Alternative histories (Fiction).