Bem, descobri que o termo é Cronologia reversa . A Wikipedia fornece alguns detalhes interessantes juntamente com os exemplos de uso em filmes & TV .
Reverse chronology is a method of story-telling whereby the plot is revealed in reverse order.
In a story employing this technique, the first scene shown is actually the conclusion to the plot. Once that scene ends, the penultimate scene is shown, and so on, so that the final scene the viewer sees is the first chronologically.
Many stories employ flashback, showing prior events, but whereas the scene order of most conventional films is A-B-C-etc, a film in reverse chronology goes Z-Y-X-etc.