Obesity is fast becoming the single greatest killer of Americans. The documentary, “Killer at Large” offers an in-depth analysis of obesity by examining the causes and suggesting ways to reverse this deadly trend. A free screening of “Killer at Large” will be held Tuesday, October 27, at 6 p.m. at the Seventh Day Adventist Church in Yucca Valley. A light vegetarian meal will be served. The church is located at 8035 Church Street.