Roland Haldane

Roland Haldane, the first major criminal in the show's Pilot, had the façade of a catering business, blowtorch and knife as part of the smoke screen. But Haldane was always a severely brutal serial rapist the FBI has been tracking, the blowtorch used to heat the symbol on the bottom of the knife, which he then used as a brand on 12 women he would rape over the course of months. The case became worse when he started to murder the women he raped, killing two women in a much shorter time span, as well as going back and doing the same to the last woman he raped before he started killing, Karen Silber. Don Eppes was at a loss when leading the team, but Charlie Eppes, his brother, helped him in what would be his first consulting case by tracking the activity based on where the killer lived. That proved to fail after Karen Silber's death, which made Charlie consider an alternative: the rapist/murderer's workplace. Which proved to lead right to Haldane. Haldane, when confronted with the evidence and realizing being made, tried to take David Sinclair as a hostage, but Don jumped on a distraction that made Haldane slip enough for Don to shoot him down and save David. Don told Charlie exactly what changed in the equation: his workplace never changed, but he moved from his home three weeks prior to the equation's input.