1960s
In 1961, Meriwether guest-starred once as Gloria in the episode "Buddy and the Amazon" on her first husband's (Frank Aletter) one-season CBS sitcom, Bringing Up Buddy. She also appeared in Leave It To Beaver episode "Community Chest" in season four. In 1962, she was cast as Martha Elweiss in the episode "My Child Is Yet a Stranger" on the CBS anthology series, The Lloyd Bridges Show. She played Nurse Dickens in a 1962 episode of the ABC sitcom, I'm Dickens, He's Fenster. From 1963 to 1965, she was cast in different roles in eight episodes of the NBC medical drama, Dr. Kildare. In 1964, she played the character Jeanelle in "This Is Going to Hurt Me More Than It Hurts You" on the CBS adventure series, Route 66. In 1965, she appeared in an episode on The Jack Benny Program as the Secretary. In a 1965 episode of 12 O'Clock High, "Mutiny at Ten Thousand Feet", she played Lieutenant Amy Patterson, and in the episodes "The Idolator" (also 1965) and "The Outsider" (1966), she played Captain Phyllis Vincent. She also guest-starred in the season-two episode "Big Brother". She was a regular on the single season, science-fiction, television series The Time Tunnel with James Darren and Robert Colbert in 1966–1967.
Meriwether appeared as Dr. Egret on the NBC series, The Man from U.N.C.L.E. ("The Mad, Mad Tea Party", 1965) and in an episode of Hazel ("How to Lose 30 Pounds in 30 Minutes", also 1965) she played Miss Wilson, the owner of an exercise studio. Meriwether portrayed Catwoman for the Batman movie (1966), and also appeared in two episodes of the Batman TV series in 1967 as Lisa Carson, a love interest to Bruce Wayne in the episodes "King Tut's Coup" and "Batman's Waterloo". In the late 1960s and early 1970s, she had guest-starring roles in numerous TV series, including The Fugitive, Mannix, Star Trek episode "That Which Survives" (1969), Perry Mason episodes #245 "The Case of the Cheating Chancellor" and "The Case of the Frustrated Folksinger" (both 1965), and the F Troop episode "O'Rourke vs. O'Reilly".
In films, Meriwether joined John Wayne and Rock Hudson for The Undefeated, and Andy Griffith in Angel in My Pocket (both 1969). In the same year as those two films, she played IMF spy Tracey in six Mission: Impossible episodes during season four after Barbara Bain's departure.
