Röda tråden (English: The Red Thread) is a Swedish television quiz show with Pekka Heino as its host that was shown on SVT in the 1990s.
[1] The program's purpose was for the participants to find "the red thread" (common denominator) in problem formulations, which consisted of a set of pictures.
The theme song of the show was "Wonderful World" by Sam Cooke.
The first was "The Red Thread", including pictures which all had a common feature which the contestants had to figure out.
The third portion was "Celebrity chain" (Swedish: Kändiskedjan), where pictures of celebrities were linked together by a common denominator; for example the first picture could have been table tennis player Kjell Johansson, and the next picture could have then been ice hockey goalie Kjell Svensson, etc.