Mackenzie's Raiders
In 1959, Carlson was cast as Paul Drake in "The Faithless" of the NBC western television series Riverboat, with Darren McGavin. In the story line, Drake is an escaped prisoner with medical training being transported on the river vessel, the Enterprise, back to jail. Having lost his religious faith, Drake refuses to render medical assistance to a two-year-old girl stricken with a communicable disease which threatens the entire vessel. William Phipps and Jeanne Bates play the parents of the child. Bethel Leslie portrays Cathy Norris.
Carlson began directing for television: The Man and the Challenge (which he also wrote for), This Man Dawson, Men Into Space, Alcoa Premiere, and The Detectives.
His early 1960s credits as actor included The Chevy Mystery Show (in the first television story to feature Lt. Columbo), Tormented, The Aquanauts (which he also directed), The Loretta Young Show (which he also directed), Bus Stop, Thriller (which he also directed), Going My Way, Arrest and Trial, The Fugitive, Wagon Train, The Christophers, and Burke's Law. He wrote episodes of Daktari and the movie Island of the Lost (1967).
In 1965, he played a mad scientist who creates a mutant, killer octopus in the Voyage to the Bottom of the Sea episode "The Village of Guilt".
He played in the movies Della (1965) and Kid Rodelo (1965), directing the latter. He acted in the series The Virginian, Bonanza and Rawhide.
In the final two seasons of CBS's Perry Mason, Carlson made two guest appearances, both times as the murder victim. In 1964 he played Anthony Fry in "The Case of the Tragic Trophy;" in 1966, he played Clete Hawley in "The Case of the Avenging Angel."