A teenager accused of killing two women in their 20s and a child over the course of half a day last August went on trial this afternoon in St. Louis. Assistant Circuit Attorney Natalia Ogurkiewicz told the jury that the triple-murder trial of Prinshun McClain, 19, would be “a story of nightmares” and that McClain was the “beating heart of those nightmares.” In her opening statement, Ogurkiewicz said that on the evening of August 10, 2021, McClain stalked 26-year-old aspiring actress Victoria Manisco as she travelled home via MetroLink and then a city bus.