Guest Stars Linden Ashby as Sheriff Noah Stilinski Melissa Ponzio as Melissa McCall Ryan Kelley as Deputy Jordan Parrish Seth Gilliam as Dr. Alan Deaton Khylin Rhambo as Mason Hewitt Cody Christian as Theo Raeken Michael Johnston as Corey Bryant Victoria Moroles as Hayden Romero Tom Choi as Ken Yukimura Marisol Nichols as Corinne Douglas Tait as The Pathologist Caitlin Dechelle as The Geneticist Marti Matulis as The Surgeon