Daniel D'Addario Chief TV CriticFrom its title, “Sasquatch” sounds like the story of Bigfoot — and at the start, it looks that way too. The three-part documentary series begins with journalist David Holthouse recounting the time he visited a cannabis farm and overheard the tale of three workers who had been devoured by the legendary beast.“Sasquatch” shares with its most prominent on-screen voice, Holthouse, an abiding interest in looking beneath the surface of the seemingly ordinary.