Langdon made her second guest appearance on "Perry Mason" in 1964 as murder victim Bonnie in "The Case of the Scandalous Sculptor." Her third "Perry Mason" appearance was in the 1966 episode "The Case of the Avenging Angel" as Dorothy (Dotty) Merrill. Other guest appearances on TV programs included "Gunsmoke", "Tales of Wells Fargo", "77 Sunset Strip", "Bourbon Street Beat", "Room for One More", "Shotgun Slade", "Mannix", "Thriller", "Bonanza", "Ironside", "McHale's Navy", "The Man from U.N.C.L.E.", "Banacek", "The Wild Wild West", "Hart to Hart", "Three's Company", "The Love Boat", "Happy Days" and as herself on "Rowan and Martin's Laugh In".