Mark Stevens (born Richard William Stevens; December 13, 1916 – September 15, 1994) was an American actor who appeared in films and on television. He was one of four men who played the lead role in the television series Martin Kane, Private Eye, appearing in 1953–54.
Rosemary Shirley DeCamp (November 14, 1910 – February 20, 2001) was an American radio, film, and television actress.
Jeff York (March 23, 1912 – October 11, 1995), aka Granville Owen, was an American film and television actor who began his career in the late 1930s using his given name, Granville Owen Scofield. He was also sometimes credited as Jeff Yorke. He died in 1995, at age 83.
Herbert Alonzo "Lon" McCallister Jr. (April 17, 1923 – June 11, 2005) was an American actor. According to one obituary, he was best known for "playing gentle, boyish young men from the country." Another said he "had an ingenuous appeal that made him a favourite of family audiences, and was particularly at home in outdoor settings featuring dogs and horses. Ultimately his perennial boyishness and slight stature became a handicap for more mature roles."