EW has learned exclusively that Dohring, well known for playing swoon-worthy Logan on Veronica Mars, has been tapped to guest star on the upcoming CW sci-fi drama as Killian McCrane, a former paranormal operative who once worked with John (Luke Mitchell) at Ultra, the paramilitary group that hunts down the Tomorrow People. In the episode, airing later this year, we learn Killian went off the grid but has resurfaced to exact revenge. Dohring, who in the role will reunite with onetime VMars writer and Tomorrow People exec producer Phil Klemmer, will appear in the fourth episode of the show’s freshman season, premiering Oct. 9.