Beat the Clock is a television game show that involves people trying to complete challenges to win prizes while faced with a time limit. The show was a creation of Mark Goodson-Bill Todman Productions. The show began on radio as Time's A-Wastin' in 1948, hosted by Bud Collyer, and changed its name to Beat the Time on January 5, 1949.
The show moved to television on the CBS nighttime schedule starting on March 23, 1950. On September 16, 1957, CBS premiered an afternoon version of the show as well, which ran for a year. The nighttime show was cancelled on February 16, 1958, and the afternoon program followed on September 12, 1958.
Soon, the show moved to ABC's daytime schedule, and ran from October 13, 1958 to January 27, 1961. One couple competed against the Clock to win a prize in stunts that could require one or both members of the couple. The stunt was described and the time limit was set on a giant wall clock.
The time limit was always a multiple of 5 seconds, usually at least 30 seconds; at one point Collyer said that a 55-second time limit was the maximum, but later on, stunts occasionally got 60-second limits. On the primetime version, the first stunt was called the "$100 Clock".
If the couple beat the $100 Clock, they moved on to the "$200 Clock" and the same rules applied. If they failed to beat the $100 Clock, they received a consolation prize worth less than $100. If they failed to beat the $200 Clock, they got a prize worth more than $100. On the daytime versions, a couple continued playing as long as they kept beating the clock.
According to markgoodson.fandom.com