A writer turned insurance investigator follows an ominous trail in this thriller from Brazilian director Flavoria R. Tambellini. Ivan Canabrava's (Jose Mayer) specialty as an insurance investigator is cases in which the perpetrators have used Bufo Marinus to commit fraud. A poison secreted by frogs that induces catalepsy in humans, the chemical's uncanny ability to bring about death-like symptoms allows the user to collect large life insurance policies and commit numerous other crimes. Subsequently giving up his career and focusing on writing, a decade later Canabrava discovers what appears to be a resurgence of the once popular drug and subsequently embarks on an investigation that may place his life in grave danger. ~ Jason Buchanan, All Movie Guide