Arlene Francis, the witty actress and television personality who was a panelist on the popular What's My Line? show for its 25-year run, has died. Francis died Thursday at Kaiser Hospital in San ...

What's my line? Actors on memorization June 12, 2016 / 10:16 AM EDT / CBS News Broadway actors try to remember their lines well before opening night. And they all have their own ways of doing that.

Watching “What’s My Line?” every night opens an often-thrilling window onto America’s mid-20th-century preoccupations with the Cold War, popular culture, fashion, politics and science.

Yet, the simplicity paid off, with What’s My Line? winning three Emmy Awards for "Best Quiz or Audience Participation Show" in 1952, 1953, and 1958, and the Golden Globe for Best TV Show in 1962.

What’s My Line? had been on the air for nearly 25 years as one of the producer Goodson Todman’s most popular panel game shows, in which a celebrity panel tried to guess the occupation of a guest.