The story told in "Petra" is fragmented in 7 chapters, but is not told lineally, so the first chapert we see is the second, then the third, the first, and so on. This is a "fresh" way to structure the narrative, with some potential regarding the building of suspense. However, at some point, it becomes useless in its functions, even making some chapters irrelevant in all its content (thats the power of an elipsis, so turning back in time is pointless unless we tell something new, something we lost in the way).
Despite this caracteristics, the movie does his job in creating human drama, may be execesive sometimes, and senseless in the end, but powerful during the majority of the time.
