LONDON — Each episode of “Adolescence,” the four-part Netflix drama premiering Thursday, was filmed in a single continuous shot. The one-take wonder of ‘Adolescence,’ a family drama about knife crime While shooting the British show, which traces the emotional fallout after a teenage stabbing, the camera was handed between operators like a relay race, clipped on and off drones and passed between the fast-moving crew as they followed the actors in and out of buildings and vehicles. It’s a style used before by director Philip Barantini to add an immediacy for the viewer and immersion for the cast, which includes Stephen Graham, Erin Doherty and Ashley Walters. Graham, who worked with Barantini on the restaurant series and film “Boiling Point,” says it’s a zen-like style of acting. “You have that kind of spontaneity and that energy that you get from doing a play and doing a live performance,” while using the naturalistic style of television acting, Graham explains. Newcomer Owen Cooper plays Jamie Miller, the young boy accused of the knife crime. He’s at the …