Columbo is an American television series starring Peter Falk as Columbo, a homicide detective with the Los Angeles Police Department. The character and show, created by Richard Levinson and William Link, popularized the inverted detective story format, which begins by showing the commission of the crime and its perpetrator; the series therefore has no "whodunit" element. The plot revolves around how a perpetrator whose identity is already known to the audience will finally be caught and exposed (which the show's writers called a "howcatchem," rather than a "whodunit").