As noted by Paget Brewster’s Emily Prentiss, Elias Voit’s kill kits resemble those used by the horrifying real-life serial killer Israel Keyes. As seen in this photo on the FBI’s website, Keyes stored his tools in simple orange barrels, as opposed to Voit’s black, foam-filled suitcases. According to CBS News, it’s speculated that Keyes took 11 lives, represented in crude and grotesque portraits he created during his time in prison. Keyes took his own life before the entirety of his crimes could be solved.
Though Voit’s kits are meant for his fellow killers, Keyes’ kits were seemingly devised as a matter of convenience. Per CBS News, Keyes buried the containers throughout the country during his travels to be uncovered whenever he felt the urge to kill. Like Voit, Keyes lacked a “victim profile,” seemingly choosing his targets at random and digging up kits as necessary. To this day, the FBI suspects that there are still kill kits of Keyes that have yet to be found — they advise citizens not to touch one should they come across it, and to instead contact authorities immediately. Another similarity he shared with Voit and his followers is his extensive use of rental cars to avoid detection.