In 1946, a serial killer murdered five people over the course of 10 weeks in Texarkana, Texas before disappearing. Theories abound about who the killer may have been, but decades later, the case is still unsolved. In season two of "Devilish Deeds," Texarkana native Peyton Sims tells the story of the Phantom Killer, his young victims and the people who are still investigating this case today.