Warning: The below contains MAJOR spoilers for the Criminal Minds: Evolution Season 18 premiere “Swimmer’s Calculus.”] Oh, Elias Voit (Zach Gilford). The serial killer known as Sicarius remains at the center of so many of the questions of Criminal Minds: Evolution,

Criminal Minds” returns May 8 with the season 18 premiere, “Swimmer’s Calculus,” now streaming on Paramount+ (try it free).