To many, spontaneous human combustion remains as a myth, making it a prospective plot device in fantasy or science fiction. I am interested to know when was it used for the first time in that way.
the 1977 spoof "documentary" Alternative 3 talks about "hot jobs", in which, among other things, the British government induces SHC to silence informants. I don't know if it explains exactly how the government does this.
*Alternative 3" has also gotten incorporated into conspiracy theory mythologies as actually real.