Former state Sen. Linda Newell is calling her short documentary about turning a bill into a law a “human story under the dome.” “The Last Bill, A Senator’s Story,” which premiers this weekend, is a behind-the-scenes documentary following Newell, D-Littleton, and Sen. Kevin Lundberg, R-Berthoud, as Newell works on bills about suicide prevention and false use of service animals. Newell, who termed out after eight years as a senator, filmed the documentary with the Colorado Film School and Indie Denver Media Productions. It premiers this Saturday at Alamo Drafthouse Cinema Aspen Grove, with two showings and “red carpet” photos starting at 11:30 a.m.