Robert Knapp Actor or Actress (16) Adam-12 (1968) The Invaders (1967) The Threat (1960) Gunmen from Laredo (1959) Black Saddle (1959) Hot Car Girl (1958) The Rawhide Trail (1958) Outlaw's Son (1957) Silent Service, The (1957) Revolt at Fort Laramie (1957) Tomahawk Trail (1957) Scandal Incorporated (1956) Silent Raiders (1954) Mesa of Lost Women (1953) Strange Fascination (1952) Fixed Bayonets! (1951)
