Four panelists must determine guests' occupations - and, in the case of famous guests, while blindfolded, their identity - by asking only "yes" or "no" questions.
Currently, you can only stream What's My Line? on Classix in Canada.
Unfortunately, you cannot buy or rent What's My Line? on any of the streaming services in Canada at the moment.
The first season of What's My Line? was released in 1950.
There is currently one season of What's My Line?, which was released in 1950.
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