Author Don Winslow famously doesn‘t rate the film Sicario. Only a writer who covers the same subject, ramped up to 11, in a decades spanning, behemoth of a trilogy (of which the Border is the final instalment) could legitimately criticise that movie. This is page-turning action and political machinations of a supreme level but be warned, it is a violent and harrowing story about the Mexican Drug cartels, their victims and adversaries.