Original Season
Four celebrity panelists try to guess the occupation of a guest by asking questions that result in yes or no answers.
Four panelists must determine guests' occupations - and, in the case of famous guests, while blindfolded, their identity - by asking only "yes" or "no" questions.
Every season of What's My Line? in chronological order, with premiere dates and episode counts.
Original Season
Four celebrity panelists try to guess the occupation of a guest by asking questions that result in yes or no answers.
Four celebrity panelists try to guess the occupation of a guest by asking questions that result in yes or no answers.
Season 3 of What's My Line? premiered on 2 September 1951, with 53 episodes.
Season 4 of What's My Line? premiered on 7 September 1952, with 52 episodes.
Season 5 of What's My Line? premiered on 6 September 1953, with 53 episodes.
Season 6 of What's My Line? premiered on 5 September 1954, with 51 episodes.
Season 7 of What's My Line? premiered on 4 September 1955, with 52 episodes.
Season 8 of What's My Line? premiered on 2 September 1956, with 52 episodes.
Season 9 of What's My Line? premiered on 1 September 1957, with 53 episodes.
Season 10 of What's My Line? premiered on 7 September 1958, with 49 episodes.
Season 11 of What's My Line? premiered on 6 September 1959, with 49 episodes.
Season 12 of What's My Line? premiered on 4 September 1960, with 50 episodes.
Season 13 of What's My Line? premiered on 3 September 1961, with 50 episodes.
Season 14 of What's My Line? premiered on 2 September 1962, with 50 episodes.
Season 15 of What's My Line? premiered on 1 September 1963, with 50 episodes.
Season 16 of What's My Line? premiered on 6 September 1964, with 51 episodes.
Season 17 of What's My Line? premiered on 5 September 1965, with 49 episodes.
Current Season
Season 18 of What's My Line? premiered on 4 September 1966, with 50 episodes.
Meet the actors, directors, and creators who bring What's My Line? to life. Tap on any artist to explore their filmography.
Official streaming availability, audio options, and playback quality for What's My Line?.
Included with subscription. Stream all seasons and episodes in ultra high definition across TV, Mobile, and Web.
Similar top-rated titles you might also enjoy streaming.
What's My Line? was released on 2 February 1950.
The web series stars John Charles Daly, Louis Untermeyer, Hal Block, Fred Allen, Robert Q. Lewis.
What's My Line? is directed by Franklin Heller.
What's My Line? has an IMDb rating of 8.5/10 from 2K votes.
Details checked against JustWatch India, TVmaze and Wikipedia, last verified on 30 October 2026. Spotted a mistake? Write to [email protected].