Paul Keeler (Ed Begley to November 1952) Joe Roberts (Herbert "Herb" Nelson to December 24, 1955), character died of a heart attack. Katherine "Kathy" Roberts Lang Grant Holden (Susan Douglas Rubeš, to March 31, 1958), character killed off. Joey Roberts (Tarry Green to September 1953) Dr. Richard "Dick" Grant, Jr. (James Lipton to end of decade) Bob Lang, Kathy's first husband, father of Robin, killed off Richard Grant, Sr. (Ed Prentiss to 1954), written out Clyde Palmer, Trudy's husband, character talked about but not seen Replaced original television cast members Meta Bauer White Roberts Banning (Ellen Demming, January 5, 1953 to end of decade) Reverend Dr. Paul Keeler (Melville Ruick to 1954) Joey Roberts (Richard Holland to December 1953), written out. Trudy Bauer Palmer (Lisa Howard, March 14, 1957 to March 14, 1958) Bill Bauer (Ed Bryce, November 1959 to end of decade) Other characters Gloria La Rue Harper (Anne Burr McDermott, November 1952 to April 1954), written out Sid Harper (Philip Sterling, November 1952 to April 1954), written out Richard Hanley (Mandel Kramer, January 1953 to December 1955, then October 1959 to end of decade) Janet Johnson (Ruth Warrick, March 1953 to October 1954; Lois Wheeler, October 1954 to September 1956, then May 1957 to August 1958), written out Peggy Ashley Regan (Patricia Wheel, May 1953 to March 1955), written out Laura Ashley Grant (Katherine Anderson, 1953; Alice Yourman, 1953 to 1956), written out Michael "Mike" Bauer (Glenn Walken & Christopher Walken, January 12, 1954 to June 22, 1956; Michael Allen, 1957 to end of decade), eldest son of Bill and Bert Bauer, born in March 1952 Robin Lang Holden (Zina Bethune, May 1956 to April 1958; Judy Robinson, April 1959 to end of decade), daughter of Kathy and Bob Lang, adopted by Dick Grant and then by Mark Holden, born May 3, 1953 William "Billy" Edward Bauer, Jr. (Pat Collins, from 1958 to end of decade), second son of Bill and Bert Bauer, born on December 31, 1954 Lila Taylor Kelly (Nancy Wickwire, 1954 to January 1956; Teri Keane, December 1957), written out Dr. Jim Kelly (Paul Potter, 1954 to January 1956), written out Dr. John Brooks (Charles Baxter, 1954–1955), written out Dr. Bart Thompson (Barry Thomson, 1954), written out Dan Peters (Paul Ballantyne, 1954), written out Mrs. Laurey (Lois Wilson, January 1954 to December 1955; Virginia Payne, January to April 1956), the landlady of the apartment building