Dexter was villainous to Joel McCrea in The Oklahoman (1957), produced by Walter Mirisch and could be seen in Run Silent Run Deep (1958), again as a villain. He largely focused on television though, appearing in episodes of Climax!, The Gale Storm Show, How to Marry a Millionaire, Pursuit, Studio One in Hollywood, Wagon Train, Have Gun - Will Travel, Zane Grey Theatre, Behind Closed Doors, Cimarron City, Yancy Derringer, This Man Dawson, 77 Sunset Strip, Colt 45, The Man from Blackhawk, Tightrope, Mr. Lucky, Bat Masterton, and Wanted: Dead or Alive.